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Finding the Fourth Proportional to 11,405.65, 17,114.15 and 6,404.92

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Solution

The fourth proportional to 11,405.65, 17,114.15 and 6,404.92 is: 9,610.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,405.65 : 17,114.15 = 6,404.92 : x
  2. Step 2: Convert to fraction form
    11,405.65/17,114.15 = 6,404.92/x
  3. Step 3: Cross multiply
    11,405.65x = 17,114.15 × 6,404.92
  4. Step 4: Simplify right side
    11,405.65x = 109,614,761.62
  5. Step 5: Solve for x
    x = 109,614,761.62/11,405.65
  6. Step 6: Final answer
    x = 9,610.57

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1.5x scale

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.