Home / 18,114.62-25,047.51-15,781.82

Finding the Fourth Proportional to 18,114.62, 25,047.51 and 15,781.82

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Solution

The fourth proportional to 18,114.62, 25,047.51 and 15,781.82 is: 21,821.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,114.62 : 25,047.51 = 15,781.82 : x
  2. Step 2: Convert to fraction form
    18,114.62/25,047.51 = 15,781.82/x
  3. Step 3: Cross multiply
    18,114.62x = 25,047.51 × 15,781.82
  4. Step 4: Simplify right side
    18,114.62x = 395,295,294.27
  5. Step 5: Solve for x
    x = 395,295,294.27/18,114.62
  6. Step 6: Final answer
    x = 21,821.89

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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.