Home / 28,086.76-38,754.66-18,145

Finding the Fourth Proportional to 28,086.76, 38,754.66 and 18,145

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Solution

The fourth proportional to 28,086.76, 38,754.66 and 18,145 is: 25,036.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,086.76 : 38,754.66 = 18,145 : x
  2. Step 2: Convert to fraction form
    28,086.76/38,754.66 = 18,145/x
  3. Step 3: Cross multiply
    28,086.76x = 38,754.66 × 18,145
  4. Step 4: Simplify right side
    28,086.76x = 703,203,305.70
  5. Step 5: Solve for x
    x = 703,203,305.70/28,086.76
  6. Step 6: Final answer
    x = 25,036.83

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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.