Home / 39,408.20-54,382.56-21,502.76

Finding the Fourth Proportional to 39,408.20, 54,382.56 and 21,502.76

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Solution

The fourth proportional to 39,408.20, 54,382.56 and 21,502.76 is: 29,673.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,408.20 : 54,382.56 = 21,502.76 : x
  2. Step 2: Convert to fraction form
    39,408.20/54,382.56 = 21,502.76/x
  3. Step 3: Cross multiply
    39,408.20x = 54,382.56 × 21,502.76
  4. Step 4: Simplify right side
    39,408.20x = 1,169,375,135.87
  5. Step 5: Solve for x
    x = 1,169,375,135.87/39,408.20
  6. Step 6: Final answer
    x = 29,673.40

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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.