Home / 18,709.18-28,063.52-5,382.52

Finding the Fourth Proportional to 18,709.18, 28,063.52 and 5,382.52

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Solution

The fourth proportional to 18,709.18, 28,063.52 and 5,382.52 is: 8,073.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,709.18 : 28,063.52 = 5,382.52 : x
  2. Step 2: Convert to fraction form
    18,709.18/28,063.52 = 5,382.52/x
  3. Step 3: Cross multiply
    18,709.18x = 28,063.52 × 5,382.52
  4. Step 4: Simplify right side
    18,709.18x = 151,052,457.67
  5. Step 5: Solve for x
    x = 151,052,457.67/18,709.18
  6. Step 6: Final answer
    x = 8,073.71

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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.