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Finding the Fourth Proportional to 12,745.19, 17,591.17 and 7,081.88

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Solution

The fourth proportional to 12,745.19, 17,591.17 and 7,081.88 is: 9,774.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,745.19 : 17,591.17 = 7,081.88 : x
  2. Step 2: Convert to fraction form
    12,745.19/17,591.17 = 7,081.88/x
  3. Step 3: Cross multiply
    12,745.19x = 17,591.17 × 7,081.88
  4. Step 4: Simplify right side
    12,745.19x = 124,578,475.61
  5. Step 5: Solve for x
    x = 124,578,475.61/12,745.19
  6. Step 6: Final answer
    x = 9,774.55

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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.