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Finding the Fourth Proportional to 15,591.80, 21,522.84 and 9,625.88

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Solution

The fourth proportional to 15,591.80, 21,522.84 and 9,625.88 is: 13,287.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,591.80 : 21,522.84 = 9,625.88 : x
  2. Step 2: Convert to fraction form
    15,591.80/21,522.84 = 9,625.88/x
  3. Step 3: Cross multiply
    15,591.80x = 21,522.84 × 9,625.88
  4. Step 4: Simplify right side
    15,591.80x = 207,176,275.10
  5. Step 5: Solve for x
    x = 207,176,275.10/15,591.80
  6. Step 6: Final answer
    x = 13,287.51

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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.