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Finding the Fourth Proportional to 11,456.66, 17,182.25 and 8,372.99

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Solution

The fourth proportional to 11,456.66, 17,182.25 and 8,372.99 is: 12,557.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,456.66 : 17,182.25 = 8,372.99 : x
  2. Step 2: Convert to fraction form
    11,456.66/17,182.25 = 8,372.99/x
  3. Step 3: Cross multiply
    11,456.66x = 17,182.25 × 8,372.99
  4. Step 4: Simplify right side
    11,456.66x = 143,866,679.65
  5. Step 5: Solve for x
    x = 143,866,679.65/11,456.66
  6. Step 6: Final answer
    x = 12,557.48

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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.