Home / 27,879.78-38,473.34-15,304.53

Finding the Fourth Proportional to 27,879.78, 38,473.34 and 15,304.53

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Solution

The fourth proportional to 27,879.78, 38,473.34 and 15,304.53 is: 21,119.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,879.78 : 38,473.34 = 15,304.53 : x
  2. Step 2: Convert to fraction form
    27,879.78/38,473.34 = 15,304.53/x
  3. Step 3: Cross multiply
    27,879.78x = 38,473.34 × 15,304.53
  4. Step 4: Simplify right side
    27,879.78x = 588,816,309.71
  5. Step 5: Solve for x
    x = 588,816,309.71/27,879.78
  6. Step 6: Final answer
    x = 21,119.83

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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.