Home / 15,139.06-20,892.18-8,424.97

Finding the Fourth Proportional to 15,139.06, 20,892.18 and 8,424.97

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Solution

The fourth proportional to 15,139.06, 20,892.18 and 8,424.97 is: 11,626.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,139.06 : 20,892.18 = 8,424.97 : x
  2. Step 2: Convert to fraction form
    15,139.06/20,892.18 = 8,424.97/x
  3. Step 3: Cross multiply
    15,139.06x = 20,892.18 × 8,424.97
  4. Step 4: Simplify right side
    15,139.06x = 176,015,989.73
  5. Step 5: Solve for x
    x = 176,015,989.73/15,139.06
  6. Step 6: Final answer
    x = 11,626.61

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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.