Home / 11,780.50-17,659.56-4,379.92

Finding the Fourth Proportional to 11,780.50, 17,659.56 and 4,379.92

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Solution

The fourth proportional to 11,780.50, 17,659.56 and 4,379.92 is: 6,565.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,780.50 : 17,659.56 = 4,379.92 : x
  2. Step 2: Convert to fraction form
    11,780.50/17,659.56 = 4,379.92/x
  3. Step 3: Cross multiply
    11,780.50x = 17,659.56 × 4,379.92
  4. Step 4: Simplify right side
    11,780.50x = 77,347,460.04
  5. Step 5: Solve for x
    x = 77,347,460.04/11,780.50
  6. Step 6: Final answer
    x = 6,565.72

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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.