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Finding the Fourth Proportional to 21,024,946.80, 31,466,561.40 and 21,024,946.80

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Solution

The fourth proportional to 21,024,946.80, 31,466,561.40 and 21,024,946.80 is: 31,466,561.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,024,946.80 : 31,466,561.40 = 21,024,946.80 : x
  2. Step 2: Convert to fraction form
    21,024,946.80/31,466,561.40 = 21,024,946.80/x
  3. Step 3: Cross multiply
    21,024,946.80x = 31,466,561.40 × 21,024,946.80
  4. Step 4: Simplify right side
    21,024,946.80x = 661,582,779,413,933.50
  5. Step 5: Solve for x
    x = 661,582,779,413,933.50/21,024,946.80
  6. Step 6: Final answer
    x = 31,466,561.40

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Double scale
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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.