Home / 27,811.13-38,379.38-15,235.88

Finding the Fourth Proportional to 27,811.13, 38,379.38 and 15,235.88

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Solution

The fourth proportional to 27,811.13, 38,379.38 and 15,235.88 is: 21,025.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,811.13 : 38,379.38 = 15,235.88 : x
  2. Step 2: Convert to fraction form
    27,811.13/38,379.38 = 15,235.88/x
  3. Step 3: Cross multiply
    27,811.13x = 38,379.38 × 15,235.88
  4. Step 4: Simplify right side
    27,811.13x = 584,743,360.08
  5. Step 5: Solve for x
    x = 584,743,360.08/27,811.13
  6. Step 6: Final answer
    x = 21,025.52

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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.