Home / 18,315.18-27,470.28-5,168.61

Finding the Fourth Proportional to 18,315.18, 27,470.28 and 5,168.61

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Solution

The fourth proportional to 18,315.18, 27,470.28 and 5,168.61 is: 7,752.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,315.18 : 27,470.28 = 5,168.61 : x
  2. Step 2: Convert to fraction form
    18,315.18/27,470.28 = 5,168.61/x
  3. Step 3: Cross multiply
    18,315.18x = 27,470.28 × 5,168.61
  4. Step 4: Simplify right side
    18,315.18x = 141,983,163.91
  5. Step 5: Solve for x
    x = 141,983,163.91/18,315.18
  6. Step 6: Final answer
    x = 7,752.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.