Home / 39,427.38-54,409.92-21,522.78

Finding the Fourth Proportional to 39,427.38, 54,409.92 and 21,522.78

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Solution

The fourth proportional to 39,427.38, 54,409.92 and 21,522.78 is: 29,701.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,427.38 : 54,409.92 = 21,522.78 : x
  2. Step 2: Convert to fraction form
    39,427.38/54,409.92 = 21,522.78/x
  3. Step 3: Cross multiply
    39,427.38x = 54,409.92 × 21,522.78
  4. Step 4: Simplify right side
    39,427.38x = 1,171,052,737.98
  5. Step 5: Solve for x
    x = 1,171,052,737.98/39,427.38
  6. Step 6: Final answer
    x = 29,701.51

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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.