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Finding the Fourth Proportional to 15,604.71, 21,534.58 and 8,531.12

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Solution

The fourth proportional to 15,604.71, 21,534.58 and 8,531.12 is: 11,772.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,604.71 : 21,534.58 = 8,531.12 : x
  2. Step 2: Convert to fraction form
    15,604.71/21,534.58 = 8,531.12/x
  3. Step 3: Cross multiply
    15,604.71x = 21,534.58 × 8,531.12
  4. Step 4: Simplify right side
    15,604.71x = 183,714,086.13
  5. Step 5: Solve for x
    x = 183,714,086.13/15,604.71
  6. Step 6: Final answer
    x = 11,772.99

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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.