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Finding the Fourth Proportional to 17,685.52, 24,445.04 and 15,545

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Solution

The fourth proportional to 17,685.52, 24,445.04 and 15,545 is: 21,486.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,685.52 : 24,445.04 = 15,545 : x
  2. Step 2: Convert to fraction form
    17,685.52/24,445.04 = 15,545/x
  3. Step 3: Cross multiply
    17,685.52x = 24,445.04 × 15,545
  4. Step 4: Simplify right side
    17,685.52x = 379,998,146.80
  5. Step 5: Solve for x
    x = 379,998,146.80/17,685.52
  6. Step 6: Final answer
    x = 21,486.40

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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.