Home / 22,781.88-34,156.42-13,998.65

Finding the Fourth Proportional to 22,781.88, 34,156.42 and 13,998.65

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Solution

The fourth proportional to 22,781.88, 34,156.42 and 13,998.65 is: 20,987.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,781.88 : 34,156.42 = 13,998.65 : x
  2. Step 2: Convert to fraction form
    22,781.88/34,156.42 = 13,998.65/x
  3. Step 3: Cross multiply
    22,781.88x = 34,156.42 × 13,998.65
  4. Step 4: Simplify right side
    22,781.88x = 478,143,683.44
  5. Step 5: Solve for x
    x = 478,143,683.44/22,781.88
  6. Step 6: Final answer
    x = 20,987.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.