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Finding the Fourth Proportional to 12,575.34, 18,869.16 and 8,901.18

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Solution

The fourth proportional to 12,575.34, 18,869.16 and 8,901.18 is: 13,356.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,575.34 : 18,869.16 = 8,901.18 : x
  2. Step 2: Convert to fraction form
    12,575.34/18,869.16 = 8,901.18/x
  3. Step 3: Cross multiply
    12,575.34x = 18,869.16 × 8,901.18
  4. Step 4: Simplify right side
    12,575.34x = 167,957,789.61
  5. Step 5: Solve for x
    x = 167,957,789.61/12,575.34
  6. Step 6: Final answer
    x = 13,356.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.