Home / 39,387.68-54,352.88-22,620.72

Finding the Fourth Proportional to 39,387.68, 54,352.88 and 22,620.72

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Solution

The fourth proportional to 39,387.68, 54,352.88 and 22,620.72 is: 31,215.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,387.68 : 54,352.88 = 22,620.72 : x
  2. Step 2: Convert to fraction form
    39,387.68/54,352.88 = 22,620.72/x
  3. Step 3: Cross multiply
    39,387.68x = 54,352.88 × 22,620.72
  4. Step 4: Simplify right side
    39,387.68x = 1,229,501,279.67
  5. Step 5: Solve for x
    x = 1,229,501,279.67/39,387.68
  6. Step 6: Final answer
    x = 31,215.38

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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.