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Finding the Fourth Proportional to 16,390.52, 22,618.88 and 8,938.52

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Solution

The fourth proportional to 16,390.52, 22,618.88 and 8,938.52 is: 12,335.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,390.52 : 22,618.88 = 8,938.52 : x
  2. Step 2: Convert to fraction form
    16,390.52/22,618.88 = 8,938.52/x
  3. Step 3: Cross multiply
    16,390.52x = 22,618.88 × 8,938.52
  4. Step 4: Simplify right side
    16,390.52x = 202,179,311.26
  5. Step 5: Solve for x
    x = 202,179,311.26/16,390.52
  6. Step 6: Final answer
    x = 12,335.14

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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.