Home / 27,854.76-38,440.14-15,279.50

Finding the Fourth Proportional to 27,854.76, 38,440.14 and 15,279.50

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Solution

The fourth proportional to 27,854.76, 38,440.14 and 15,279.50 is: 21,086.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,854.76 : 38,440.14 = 15,279.50 : x
  2. Step 2: Convert to fraction form
    27,854.76/38,440.14 = 15,279.50/x
  3. Step 3: Cross multiply
    27,854.76x = 38,440.14 × 15,279.50
  4. Step 4: Simplify right side
    27,854.76x = 587,346,119.13
  5. Step 5: Solve for x
    x = 587,346,119.13/27,854.76
  6. Step 6: Final answer
    x = 21,086.02

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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.