Home / 39,211.38-54,111.61-21,306.39

Finding the Fourth Proportional to 39,211.38, 54,111.61 and 21,306.39

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Solution

The fourth proportional to 39,211.38, 54,111.61 and 21,306.39 is: 29,402.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,211.38 : 54,111.61 = 21,306.39 : x
  2. Step 2: Convert to fraction form
    39,211.38/54,111.61 = 21,306.39/x
  3. Step 3: Cross multiply
    39,211.38x = 54,111.61 × 21,306.39
  4. Step 4: Simplify right side
    39,211.38x = 1,152,922,972.97
  5. Step 5: Solve for x
    x = 1,152,922,972.97/39,211.38
  6. Step 6: Final answer
    x = 29,402.76

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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.