Home / 19,857.92-27,381.12-18,122.24

Finding the Fourth Proportional to 19,857.92, 27,381.12 and 18,122.24

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Solution

The fourth proportional to 19,857.92, 27,381.12 and 18,122.24 is: 24,987.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,857.92 : 27,381.12 = 18,122.24 : x
  2. Step 2: Convert to fraction form
    19,857.92/27,381.12 = 18,122.24/x
  3. Step 3: Cross multiply
    19,857.92x = 27,381.12 × 18,122.24
  4. Step 4: Simplify right side
    19,857.92x = 496,207,228.11
  5. Step 5: Solve for x
    x = 496,207,228.11/19,857.92
  6. Step 6: Final answer
    x = 24,987.88

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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.