Home / 13,723.83-20,613.30-8,187.99

Finding the Fourth Proportional to 13,723.83, 20,613.30 and 8,187.99

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Solution

The fourth proportional to 13,723.83, 20,613.30 and 8,187.99 is: 12,298.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,723.83 : 20,613.30 = 8,187.99 : x
  2. Step 2: Convert to fraction form
    13,723.83/20,613.30 = 8,187.99/x
  3. Step 3: Cross multiply
    13,723.83x = 20,613.30 × 8,187.99
  4. Step 4: Simplify right side
    13,723.83x = 168,781,494.27
  5. Step 5: Solve for x
    x = 168,781,494.27/13,723.83
  6. Step 6: Final answer
    x = 12,298.43

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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.