Home / 18,381.84-25,366.92-9,998.28

Finding the Fourth Proportional to 18,381.84, 25,366.92 and 9,998.28

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Solution

The fourth proportional to 18,381.84, 25,366.92 and 9,998.28 is: 13,797.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,381.84 : 25,366.92 = 9,998.28 : x
  2. Step 2: Convert to fraction form
    18,381.84/25,366.92 = 9,998.28/x
  3. Step 3: Cross multiply
    18,381.84x = 25,366.92 × 9,998.28
  4. Step 4: Simplify right side
    18,381.84x = 253,625,568.90
  5. Step 5: Solve for x
    x = 253,625,568.90/18,381.84
  6. Step 6: Final answer
    x = 13,797.62

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Half scale
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Double scale
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Similar ratio
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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.