Home / 18,869.55-28,305.53-6,387.85

Finding the Fourth Proportional to 18,869.55, 28,305.53 and 6,387.85

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Solution

The fourth proportional to 18,869.55, 28,305.53 and 6,387.85 is: 9,582.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,869.55 : 28,305.53 = 6,387.85 : x
  2. Step 2: Convert to fraction form
    18,869.55/28,305.53 = 6,387.85/x
  3. Step 3: Cross multiply
    18,869.55x = 28,305.53 × 6,387.85
  4. Step 4: Simplify right side
    18,869.55x = 180,811,479.81
  5. Step 5: Solve for x
    x = 180,811,479.81/18,869.55
  6. Step 6: Final answer
    x = 9,582.18

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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.