Home / 21,275,146,541.40-31,912,719,812.10-9,665,640,749.40

Finding the Fourth Proportional to 21,275,146,541.40, 31,912,719,812.10 and 9,665,640,749.40

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Solution

The fourth proportional to 21,275,146,541.40, 31,912,719,812.10 and 9,665,640,749.40 is: 14,498,461,124.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,275,146,541.40 : 31,912,719,812.10 = 9,665,640,749.40 : x
  2. Step 2: Convert to fraction form
    21,275,146,541.40/31,912,719,812.10 = 9,665,640,749.40/x
  3. Step 3: Cross multiply
    21,275,146,541.40x = 31,912,719,812.10 × 9,665,640,749.40
  4. Step 4: Simplify right side
    21,275,146,541.40x = 308,456,885,040,018,423,808
  5. Step 5: Solve for x
    x = 308,456,885,040,018,423,808/21,275,146,541.40
  6. Step 6: Final answer
    x = 14,498,461,124.10

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.