Home / 12,589.94-17,377.78-8,398.18

Finding the Fourth Proportional to 12,589.94, 17,377.78 and 8,398.18

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Solution

The fourth proportional to 12,589.94, 17,377.78 and 8,398.18 is: 11,591.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,589.94 : 17,377.78 = 8,398.18 : x
  2. Step 2: Convert to fraction form
    12,589.94/17,377.78 = 8,398.18/x
  3. Step 3: Cross multiply
    12,589.94x = 17,377.78 × 8,398.18
  4. Step 4: Simplify right side
    12,589.94x = 145,941,724.44
  5. Step 5: Solve for x
    x = 145,941,724.44/12,589.94
  6. Step 6: Final answer
    x = 11,591.93

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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.