Home / 18,381.13-25,366.15-9,997.81

Finding the Fourth Proportional to 18,381.13, 25,366.15 and 9,997.81

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Solution

The fourth proportional to 18,381.13, 25,366.15 and 9,997.81 is: 13,797.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,381.13 : 25,366.15 = 9,997.81 : x
  2. Step 2: Convert to fraction form
    18,381.13/25,366.15 = 9,997.81/x
  3. Step 3: Cross multiply
    18,381.13x = 25,366.15 × 9,997.81
  4. Step 4: Simplify right side
    18,381.13x = 253,605,948.13
  5. Step 5: Solve for x
    x = 253,605,948.13/18,381.13
  6. Step 6: Final answer
    x = 13,797.08

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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.