Home / 15,143.18-22,717.82-5,279.81

Finding the Fourth Proportional to 15,143.18, 22,717.82 and 5,279.81

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Solution

The fourth proportional to 15,143.18, 22,717.82 and 5,279.81 is: 7,920.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,143.18 : 22,717.82 = 5,279.81 : x
  2. Step 2: Convert to fraction form
    15,143.18/22,717.82 = 5,279.81/x
  3. Step 3: Cross multiply
    15,143.18x = 22,717.82 × 5,279.81
  4. Step 4: Simplify right side
    15,143.18x = 119,945,843.21
  5. Step 5: Solve for x
    x = 119,945,843.21/15,143.18
  6. Step 6: Final answer
    x = 7,920.78

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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.