Home / 38,306.32-57,400.84-25,780

Finding the Fourth Proportional to 38,306.32, 57,400.84 and 25,780

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Solution

The fourth proportional to 38,306.32, 57,400.84 and 25,780 is: 38,630.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,306.32 : 57,400.84 = 25,780 : x
  2. Step 2: Convert to fraction form
    38,306.32/57,400.84 = 25,780/x
  3. Step 3: Cross multiply
    38,306.32x = 57,400.84 × 25,780
  4. Step 4: Simplify right side
    38,306.32x = 1,479,793,655.20
  5. Step 5: Solve for x
    x = 1,479,793,655.20/38,306.32
  6. Step 6: Final answer
    x = 38,630.54

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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.