Home / 18,719.12-28,077.24-5,569.04

Finding the Fourth Proportional to 18,719.12, 28,077.24 and 5,569.04

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Solution

The fourth proportional to 18,719.12, 28,077.24 and 5,569.04 is: 8,353.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,719.12 : 28,077.24 = 5,569.04 : x
  2. Step 2: Convert to fraction form
    18,719.12/28,077.24 = 5,569.04/x
  3. Step 3: Cross multiply
    18,719.12x = 28,077.24 × 5,569.04
  4. Step 4: Simplify right side
    18,719.12x = 156,363,272.65
  5. Step 5: Solve for x
    x = 156,363,272.65/18,719.12
  6. Step 6: Final answer
    x = 8,353.13

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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.