Home / 12,489.11-18,739.77-5,468.16

Finding the Fourth Proportional to 12,489.11, 18,739.77 and 5,468.16

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Solution

The fourth proportional to 12,489.11, 18,739.77 and 5,468.16 is: 8,204.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,489.11 : 18,739.77 = 5,468.16 : x
  2. Step 2: Convert to fraction form
    12,489.11/18,739.77 = 5,468.16/x
  3. Step 3: Cross multiply
    12,489.11x = 18,739.77 × 5,468.16
  4. Step 4: Simplify right side
    12,489.11x = 102,472,060.72
  5. Step 5: Solve for x
    x = 102,472,060.72/12,489.11
  6. Step 6: Final answer
    x = 8,204.91

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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.