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Finding the Fourth Proportional to 16,779.80, 25,189.10 and 9,003.80

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Solution

The fourth proportional to 16,779.80, 25,189.10 and 9,003.80 is: 13,516.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,779.80 : 25,189.10 = 9,003.80 : x
  2. Step 2: Convert to fraction form
    16,779.80/25,189.10 = 9,003.80/x
  3. Step 3: Cross multiply
    16,779.80x = 25,189.10 × 9,003.80
  4. Step 4: Simplify right side
    16,779.80x = 226,797,618.58
  5. Step 5: Solve for x
    x = 226,797,618.58/16,779.80
  6. Step 6: Final answer
    x = 13,516.11

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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.