Home / 25,982.31-38,979.24-12,123.75

Finding the Fourth Proportional to 25,982.31, 38,979.24 and 12,123.75

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Solution

The fourth proportional to 25,982.31, 38,979.24 and 12,123.75 is: 18,188.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,982.31 : 38,979.24 = 12,123.75 : x
  2. Step 2: Convert to fraction form
    25,982.31/38,979.24 = 12,123.75/x
  3. Step 3: Cross multiply
    25,982.31x = 38,979.24 × 12,123.75
  4. Step 4: Simplify right side
    25,982.31x = 472,574,560.95
  5. Step 5: Solve for x
    x = 472,574,560.95/25,982.31
  6. Step 6: Final answer
    x = 18,188.32

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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.