Home / 39,229.90-54,135-21,324.76

Finding the Fourth Proportional to 39,229.90, 54,135 and 21,324.76

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Solution

The fourth proportional to 39,229.90, 54,135 and 21,324.76 is: 29,426.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,229.90 : 54,135 = 21,324.76 : x
  2. Step 2: Convert to fraction form
    39,229.90/54,135 = 21,324.76/x
  3. Step 3: Cross multiply
    39,229.90x = 54,135 × 21,324.76
  4. Step 4: Simplify right side
    39,229.90x = 1,154,415,882.60
  5. Step 5: Solve for x
    x = 1,154,415,882.60/39,229.90
  6. Step 6: Final answer
    x = 29,426.94

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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.