Home / 22,726.89-31,372.79-15,279.21

Finding the Fourth Proportional to 22,726.89, 31,372.79 and 15,279.21

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Solution

The fourth proportional to 22,726.89, 31,372.79 and 15,279.21 is: 21,091.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,726.89 : 31,372.79 = 15,279.21 : x
  2. Step 2: Convert to fraction form
    22,726.89/31,372.79 = 15,279.21/x
  3. Step 3: Cross multiply
    22,726.89x = 31,372.79 × 15,279.21
  4. Step 4: Simplify right side
    22,726.89x = 479,351,370.30
  5. Step 5: Solve for x
    x = 479,351,370.30/22,726.89
  6. Step 6: Final answer
    x = 21,091.82

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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.