Home / 39,423.85-54,402.92-21,518.71

Finding the Fourth Proportional to 39,423.85, 54,402.92 and 21,518.71

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Solution

The fourth proportional to 39,423.85, 54,402.92 and 21,518.71 is: 29,694.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,423.85 : 54,402.92 = 21,518.71 : x
  2. Step 2: Convert to fraction form
    39,423.85/54,402.92 = 21,518.71/x
  3. Step 3: Cross multiply
    39,423.85x = 54,402.92 × 21,518.71
  4. Step 4: Simplify right side
    39,423.85x = 1,170,680,551.04
  5. Step 5: Solve for x
    x = 1,170,680,551.04/39,423.85
  6. Step 6: Final answer
    x = 29,694.73

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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.