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Finding the Fourth Proportional to 15,602.29, 21,531.15 and 8,528.71

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Solution

The fourth proportional to 15,602.29, 21,531.15 and 8,528.71 is: 11,769.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,602.29 : 21,531.15 = 8,528.71 : x
  2. Step 2: Convert to fraction form
    15,602.29/21,531.15 = 8,528.71/x
  3. Step 3: Cross multiply
    15,602.29x = 21,531.15 × 8,528.71
  4. Step 4: Simplify right side
    15,602.29x = 183,632,934.32
  5. Step 5: Solve for x
    x = 183,632,934.32/15,602.29
  6. Step 6: Final answer
    x = 11,769.61

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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.