Home / 20,860.38-31,253.98-17,372.84

Finding the Fourth Proportional to 20,860.38, 31,253.98 and 17,372.84

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Solution

The fourth proportional to 20,860.38, 31,253.98 and 17,372.84 is: 26,028.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,860.38 : 31,253.98 = 17,372.84 : x
  2. Step 2: Convert to fraction form
    20,860.38/31,253.98 = 17,372.84/x
  3. Step 3: Cross multiply
    20,860.38x = 31,253.98 × 17,372.84
  4. Step 4: Simplify right side
    20,860.38x = 542,970,393.90
  5. Step 5: Solve for x
    x = 542,970,393.90/20,860.38
  6. Step 6: Final answer
    x = 26,028.79

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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.