Home / 18,871.32-28,305.15-5,723.80

Finding the Fourth Proportional to 18,871.32, 28,305.15 and 5,723.80

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Solution

The fourth proportional to 18,871.32, 28,305.15 and 5,723.80 is: 8,585.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,871.32 : 28,305.15 = 5,723.80 : x
  2. Step 2: Convert to fraction form
    18,871.32/28,305.15 = 5,723.80/x
  3. Step 3: Cross multiply
    18,871.32x = 28,305.15 × 5,723.80
  4. Step 4: Simplify right side
    18,871.32x = 162,013,017.57
  5. Step 5: Solve for x
    x = 162,013,017.57/18,871.32
  6. Step 6: Final answer
    x = 8,585.14

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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.