Home / 15,139.20-22,687.20-11,159.40

Finding the Fourth Proportional to 15,139.20, 22,687.20 and 11,159.40

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Solution

The fourth proportional to 15,139.20, 22,687.20 and 11,159.40 is: 16,723.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,139.20 : 22,687.20 = 11,159.40 : x
  2. Step 2: Convert to fraction form
    15,139.20/22,687.20 = 11,159.40/x
  3. Step 3: Cross multiply
    15,139.20x = 22,687.20 × 11,159.40
  4. Step 4: Simplify right side
    15,139.20x = 253,175,539.68
  5. Step 5: Solve for x
    x = 253,175,539.68/15,139.20
  6. Step 6: Final answer
    x = 16,723.18

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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.