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Finding the Fourth Proportional to 27,989.52, 38,622.99 and 16,657.18

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Solution

The fourth proportional to 27,989.52, 38,622.99 and 16,657.18 is: 22,985.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,989.52 : 38,622.99 = 16,657.18 : x
  2. Step 2: Convert to fraction form
    27,989.52/38,622.99 = 16,657.18/x
  3. Step 3: Cross multiply
    27,989.52x = 38,622.99 × 16,657.18
  4. Step 4: Simplify right side
    27,989.52x = 643,350,077.41
  5. Step 5: Solve for x
    x = 643,350,077.41/27,989.52
  6. Step 6: Final answer
    x = 22,985.39

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Similar ratio
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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.