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Finding the Fourth Proportional to 12,617.65, 18,899.11 and 9,147.25

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Solution

The fourth proportional to 12,617.65, 18,899.11 and 9,147.25 is: 13,701.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,617.65 : 18,899.11 = 9,147.25 : x
  2. Step 2: Convert to fraction form
    12,617.65/18,899.11 = 9,147.25/x
  3. Step 3: Cross multiply
    12,617.65x = 18,899.11 × 9,147.25
  4. Step 4: Simplify right side
    12,617.65x = 172,874,883.95
  5. Step 5: Solve for x
    x = 172,874,883.95/12,617.65
  6. Step 6: Final answer
    x = 13,701.04

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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.