Home / 22,735.70-31,380.10-15,279.38

Finding the Fourth Proportional to 22,735.70, 31,380.10 and 15,279.38

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Solution

The fourth proportional to 22,735.70, 31,380.10 and 15,279.38 is: 21,088.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,735.70 : 31,380.10 = 15,279.38 : x
  2. Step 2: Convert to fraction form
    22,735.70/31,380.10 = 15,279.38/x
  3. Step 3: Cross multiply
    22,735.70x = 31,380.10 × 15,279.38
  4. Step 4: Simplify right side
    22,735.70x = 479,468,277.24
  5. Step 5: Solve for x
    x = 479,468,277.24/22,735.70
  6. Step 6: Final answer
    x = 21,088.79

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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.