Home / 27,865.68-38,454.48-15,290.88

Finding the Fourth Proportional to 27,865.68, 38,454.48 and 15,290.88

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Solution

The fourth proportional to 27,865.68, 38,454.48 and 15,290.88 is: 21,101.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,865.68 : 38,454.48 = 15,290.88 : x
  2. Step 2: Convert to fraction form
    27,865.68/38,454.48 = 15,290.88/x
  3. Step 3: Cross multiply
    27,865.68x = 38,454.48 × 15,290.88
  4. Step 4: Simplify right side
    27,865.68x = 588,002,839.14
  5. Step 5: Solve for x
    x = 588,002,839.14/27,865.68
  6. Step 6: Final answer
    x = 21,101.33

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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.