Home / 20,474.13-28,262.61-13,306.44

Finding the Fourth Proportional to 20,474.13, 28,262.61 and 13,306.44

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Solution

The fourth proportional to 20,474.13, 28,262.61 and 13,306.44 is: 18,368.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,474.13 : 28,262.61 = 13,306.44 : x
  2. Step 2: Convert to fraction form
    20,474.13/28,262.61 = 13,306.44/x
  3. Step 3: Cross multiply
    20,474.13x = 28,262.61 × 13,306.44
  4. Step 4: Simplify right side
    20,474.13x = 376,074,724.21
  5. Step 5: Solve for x
    x = 376,074,724.21/20,474.13
  6. Step 6: Final answer
    x = 18,368.29

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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.