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Finding the Fourth Proportional to 11,187.59, 16,780.08 and 2,867.65

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Solution

The fourth proportional to 11,187.59, 16,780.08 and 2,867.65 is: 4,301.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,187.59 : 16,780.08 = 2,867.65 : x
  2. Step 2: Convert to fraction form
    11,187.59/16,780.08 = 2,867.65/x
  3. Step 3: Cross multiply
    11,187.59x = 16,780.08 × 2,867.65
  4. Step 4: Simplify right side
    11,187.59x = 48,119,443.47
  5. Step 5: Solve for x
    x = 48,119,443.47/11,187.59
  6. Step 6: Final answer
    x = 4,301.15

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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.