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Finding the Fourth Proportional to 15,665.92, 21,613.44 and 9,614.08

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Solution

The fourth proportional to 15,665.92, 21,613.44 and 9,614.08 is: 13,264.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,665.92 : 21,613.44 = 9,614.08 : x
  2. Step 2: Convert to fraction form
    15,665.92/21,613.44 = 9,614.08/x
  3. Step 3: Cross multiply
    15,665.92x = 21,613.44 × 9,614.08
  4. Step 4: Simplify right side
    15,665.92x = 207,793,341.24
  5. Step 5: Solve for x
    x = 207,793,341.24/15,665.92
  6. Step 6: Final answer
    x = 13,264.04

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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.