Home / 39,279.97-54,206.53-21,374.85

Finding the Fourth Proportional to 39,279.97, 54,206.53 and 21,374.85

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Solution

The fourth proportional to 39,279.97, 54,206.53 and 21,374.85 is: 29,497.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,279.97 : 54,206.53 = 21,374.85 : x
  2. Step 2: Convert to fraction form
    39,279.97/54,206.53 = 21,374.85/x
  3. Step 3: Cross multiply
    39,279.97x = 54,206.53 × 21,374.85
  4. Step 4: Simplify right side
    39,279.97x = 1,158,656,447.77
  5. Step 5: Solve for x
    x = 1,158,656,447.77/39,279.97
  6. Step 6: Final answer
    x = 29,497.39

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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.