Home / 18,961.38-28,449.45-7,865.25

Finding the Fourth Proportional to 18,961.38, 28,449.45 and 7,865.25

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Solution

The fourth proportional to 18,961.38, 28,449.45 and 7,865.25 is: 11,800.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,961.38 : 28,449.45 = 7,865.25 : x
  2. Step 2: Convert to fraction form
    18,961.38/28,449.45 = 7,865.25/x
  3. Step 3: Cross multiply
    18,961.38x = 28,449.45 × 7,865.25
  4. Step 4: Simplify right side
    18,961.38x = 223,762,036.61
  5. Step 5: Solve for x
    x = 223,762,036.61/18,961.38
  6. Step 6: Final answer
    x = 11,800.94

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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.