Home / 10,185.90-15,209.17-9,124.87

Finding the Fourth Proportional to 10,185.90, 15,209.17 and 9,124.87

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Solution

The fourth proportional to 10,185.90, 15,209.17 and 9,124.87 is: 13,624.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,185.90 : 15,209.17 = 9,124.87 : x
  2. Step 2: Convert to fraction form
    10,185.90/15,209.17 = 9,124.87/x
  3. Step 3: Cross multiply
    10,185.90x = 15,209.17 × 9,124.87
  4. Step 4: Simplify right side
    10,185.90x = 138,781,577.39
  5. Step 5: Solve for x
    x = 138,781,577.39/10,185.90
  6. Step 6: Final answer
    x = 13,624.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.