Home / 18,381.12-25,366.56-9,997.92

Finding the Fourth Proportional to 18,381.12, 25,366.56 and 9,997.92

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Solution

The fourth proportional to 18,381.12, 25,366.56 and 9,997.92 is: 13,797.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,381.12 : 25,366.56 = 9,997.92 : x
  2. Step 2: Convert to fraction form
    18,381.12/25,366.56 = 9,997.92/x
  3. Step 3: Cross multiply
    18,381.12x = 25,366.56 × 9,997.92
  4. Step 4: Simplify right side
    18,381.12x = 253,612,837.56
  5. Step 5: Solve for x
    x = 253,612,837.56/18,381.12
  6. Step 6: Final answer
    x = 13,797.46

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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.