Home / 18,863.40-28,298.04-5,712.65

Finding the Fourth Proportional to 18,863.40, 28,298.04 and 5,712.65

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Solution

The fourth proportional to 18,863.40, 28,298.04 and 5,712.65 is: 8,569.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,863.40 : 28,298.04 = 5,712.65 : x
  2. Step 2: Convert to fraction form
    18,863.40/28,298.04 = 5,712.65/x
  3. Step 3: Cross multiply
    18,863.40x = 28,298.04 × 5,712.65
  4. Step 4: Simplify right side
    18,863.40x = 161,656,628.15
  5. Step 5: Solve for x
    x = 161,656,628.15/18,863.40
  6. Step 6: Final answer
    x = 8,569.86

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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.