Home / 21,331,152.30-31,996,728.45-12,807,101.10

Finding the Fourth Proportional to 21,331,152.30, 31,996,728.45 and 12,807,101.10

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Solution

The fourth proportional to 21,331,152.30, 31,996,728.45 and 12,807,101.10 is: 19,210,651.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,331,152.30 : 31,996,728.45 = 12,807,101.10 : x
  2. Step 2: Convert to fraction form
    21,331,152.30/31,996,728.45 = 12,807,101.10/x
  3. Step 3: Cross multiply
    21,331,152.30x = 31,996,728.45 × 12,807,101.10
  4. Step 4: Simplify right side
    21,331,152.30x = 409,785,336,128,396.25
  5. Step 5: Solve for x
    x = 409,785,336,128,396.25/21,331,152.30
  6. Step 6: Final answer
    x = 19,210,651.65

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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.