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Finding the Fourth Proportional to 15,646.92, 21,592.75 and 9,359.30

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Solution

The fourth proportional to 15,646.92, 21,592.75 and 9,359.30 is: 12,915.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,646.92 : 21,592.75 = 9,359.30 : x
  2. Step 2: Convert to fraction form
    15,646.92/21,592.75 = 9,359.30/x
  3. Step 3: Cross multiply
    15,646.92x = 21,592.75 × 9,359.30
  4. Step 4: Simplify right side
    15,646.92x = 202,092,978.07
  5. Step 5: Solve for x
    x = 202,092,978.07/15,646.92
  6. Step 6: Final answer
    x = 12,915.83

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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.