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Finding the Fourth Proportional to 12,605.14, 17,400.49 and 8,973.53

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Solution

The fourth proportional to 12,605.14, 17,400.49 and 8,973.53 is: 12,387.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,605.14 : 17,400.49 = 8,973.53 : x
  2. Step 2: Convert to fraction form
    12,605.14/17,400.49 = 8,973.53/x
  3. Step 3: Cross multiply
    12,605.14x = 17,400.49 × 8,973.53
  4. Step 4: Simplify right side
    12,605.14x = 156,143,872.72
  5. Step 5: Solve for x
    x = 156,143,872.72/12,605.14
  6. Step 6: Final answer
    x = 12,387.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.