Home / 27,867.11-38,456.39-15,120.29

Finding the Fourth Proportional to 27,867.11, 38,456.39 and 15,120.29

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Solution

The fourth proportional to 27,867.11, 38,456.39 and 15,120.29 is: 20,865.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,867.11 : 38,456.39 = 15,120.29 : x
  2. Step 2: Convert to fraction form
    27,867.11/38,456.39 = 15,120.29/x
  3. Step 3: Cross multiply
    27,867.11x = 38,456.39 × 15,120.29
  4. Step 4: Simplify right side
    27,867.11x = 581,471,903.09
  5. Step 5: Solve for x
    x = 581,471,903.09/27,867.11
  6. Step 6: Final answer
    x = 20,865.89

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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.