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Finding the Fourth Proportional to 12,591.10, 18,901.20 and 6,759.10

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Solution

The fourth proportional to 12,591.10, 18,901.20 and 6,759.10 is: 10,146.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,591.10 : 18,901.20 = 6,759.10 : x
  2. Step 2: Convert to fraction form
    12,591.10/18,901.20 = 6,759.10/x
  3. Step 3: Cross multiply
    12,591.10x = 18,901.20 × 6,759.10
  4. Step 4: Simplify right side
    12,591.10x = 127,755,100.92
  5. Step 5: Solve for x
    x = 127,755,100.92/12,591.10
  6. Step 6: Final answer
    x = 10,146.46

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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.