Home / 27,881.82-38,476.65-15,306.30

Finding the Fourth Proportional to 27,881.82, 38,476.65 and 15,306.30

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Solution

The fourth proportional to 27,881.82, 38,476.65 and 15,306.30 is: 21,122.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,881.82 : 38,476.65 = 15,306.30 : x
  2. Step 2: Convert to fraction form
    27,881.82/38,476.65 = 15,306.30/x
  3. Step 3: Cross multiply
    27,881.82x = 38,476.65 × 15,306.30
  4. Step 4: Simplify right side
    27,881.82x = 588,935,147.90
  5. Step 5: Solve for x
    x = 588,935,147.90/27,881.82
  6. Step 6: Final answer
    x = 21,122.55

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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.