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Finding the Fourth Proportional to 12,591.80, 17,376.72 and 6,927.13

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Solution

The fourth proportional to 12,591.80, 17,376.72 and 6,927.13 is: 9,559.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,591.80 : 17,376.72 = 6,927.13 : x
  2. Step 2: Convert to fraction form
    12,591.80/17,376.72 = 6,927.13/x
  3. Step 3: Cross multiply
    12,591.80x = 17,376.72 × 6,927.13
  4. Step 4: Simplify right side
    12,591.80x = 120,370,754.97
  5. Step 5: Solve for x
    x = 120,370,754.97/12,591.80
  6. Step 6: Final answer
    x = 9,559.45

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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.