Home / 15,139.17-22,708.88-5,278.43

Finding the Fourth Proportional to 15,139.17, 22,708.88 and 5,278.43

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Solution

The fourth proportional to 15,139.17, 22,708.88 and 5,278.43 is: 7,917.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,139.17 : 22,708.88 = 5,278.43 : x
  2. Step 2: Convert to fraction form
    15,139.17/22,708.88 = 5,278.43/x
  3. Step 3: Cross multiply
    15,139.17x = 22,708.88 × 5,278.43
  4. Step 4: Simplify right side
    15,139.17x = 119,867,233.46
  5. Step 5: Solve for x
    x = 119,867,233.46/15,139.17
  6. Step 6: Final answer
    x = 7,917.69

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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.