Home / 27,854.76-38,439.36-15,279.42

Finding the Fourth Proportional to 27,854.76, 38,439.36 and 15,279.42

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Solution

The fourth proportional to 27,854.76, 38,439.36 and 15,279.42 is: 21,085.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,854.76 : 38,439.36 = 15,279.42 : x
  2. Step 2: Convert to fraction form
    27,854.76/38,439.36 = 15,279.42/x
  3. Step 3: Cross multiply
    27,854.76x = 38,439.36 × 15,279.42
  4. Step 4: Simplify right side
    27,854.76x = 587,331,125.97
  5. Step 5: Solve for x
    x = 587,331,125.97/27,854.76
  6. Step 6: Final answer
    x = 21,085.49

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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.