Home / 38,912.50-58,358.12-13,947.90

Finding the Fourth Proportional to 38,912.50, 58,358.12 and 13,947.90

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Solution

The fourth proportional to 38,912.50, 58,358.12 and 13,947.90 is: 20,918.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,912.50 : 58,358.12 = 13,947.90 : x
  2. Step 2: Convert to fraction form
    38,912.50/58,358.12 = 13,947.90/x
  3. Step 3: Cross multiply
    38,912.50x = 58,358.12 × 13,947.90
  4. Step 4: Simplify right side
    38,912.50x = 813,972,930.16
  5. Step 5: Solve for x
    x = 813,972,930.16/38,912.50
  6. Step 6: Final answer
    x = 20,918.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.