Home / 27,691.90-38,212.68-15,755.38

Finding the Fourth Proportional to 27,691.90, 38,212.68 and 15,755.38

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Solution

The fourth proportional to 27,691.90, 38,212.68 and 15,755.38 is: 21,741.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,691.90 : 38,212.68 = 15,755.38 : x
  2. Step 2: Convert to fraction form
    27,691.90/38,212.68 = 15,755.38/x
  3. Step 3: Cross multiply
    27,691.90x = 38,212.68 × 15,755.38
  4. Step 4: Simplify right side
    27,691.90x = 602,055,294.22
  5. Step 5: Solve for x
    x = 602,055,294.22/27,691.90
  6. Step 6: Final answer
    x = 21,741.21

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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.