Home / 13,702.50-18,902.16-9,218.61

Finding the Fourth Proportional to 13,702.50, 18,902.16 and 9,218.61

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Solution

The fourth proportional to 13,702.50, 18,902.16 and 9,218.61 is: 12,716.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,702.50 : 18,902.16 = 9,218.61 : x
  2. Step 2: Convert to fraction form
    13,702.50/18,902.16 = 9,218.61/x
  3. Step 3: Cross multiply
    13,702.50x = 18,902.16 × 9,218.61
  4. Step 4: Simplify right side
    13,702.50x = 174,251,641.20
  5. Step 5: Solve for x
    x = 174,251,641.20/13,702.50
  6. Step 6: Final answer
    x = 12,716.78

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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.