Home / 15,143.86-22,719.39-4,755.61

Finding the Fourth Proportional to 15,143.86, 22,719.39 and 4,755.61

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Solution

The fourth proportional to 15,143.86, 22,719.39 and 4,755.61 is: 7,134.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,143.86 : 22,719.39 = 4,755.61 : x
  2. Step 2: Convert to fraction form
    15,143.86/22,719.39 = 4,755.61/x
  3. Step 3: Cross multiply
    15,143.86x = 22,719.39 × 4,755.61
  4. Step 4: Simplify right side
    15,143.86x = 108,044,568.84
  5. Step 5: Solve for x
    x = 108,044,568.84/15,143.86
  6. Step 6: Final answer
    x = 7,134.55

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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.