Home / 14,001.38-21,001.92-5,679.42

Finding the Fourth Proportional to 14,001.38, 21,001.92 and 5,679.42

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Solution

The fourth proportional to 14,001.38, 21,001.92 and 5,679.42 is: 8,519.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,001.38 : 21,001.92 = 5,679.42 : x
  2. Step 2: Convert to fraction form
    14,001.38/21,001.92 = 5,679.42/x
  3. Step 3: Cross multiply
    14,001.38x = 21,001.92 × 5,679.42
  4. Step 4: Simplify right side
    14,001.38x = 119,278,724.49
  5. Step 5: Solve for x
    x = 119,278,724.49/14,001.38
  6. Step 6: Final answer
    x = 8,519.07

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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.