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Finding the Fourth Proportional to 15,773.92, 21,767.92 and 8,700.32

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Solution

The fourth proportional to 15,773.92, 21,767.92 and 8,700.32 is: 12,006.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,773.92 : 21,767.92 = 8,700.32 : x
  2. Step 2: Convert to fraction form
    15,773.92/21,767.92 = 8,700.32/x
  3. Step 3: Cross multiply
    15,773.92x = 21,767.92 × 8,700.32
  4. Step 4: Simplify right side
    15,773.92x = 189,387,902.40
  5. Step 5: Solve for x
    x = 189,387,902.40/15,773.92
  6. Step 6: Final answer
    x = 12,006.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.