Home / 13,125.92-18,116.69-8,344.89

Finding the Fourth Proportional to 13,125.92, 18,116.69 and 8,344.89

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Solution

The fourth proportional to 13,125.92, 18,116.69 and 8,344.89 is: 11,517.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,125.92 : 18,116.69 = 8,344.89 : x
  2. Step 2: Convert to fraction form
    13,125.92/18,116.69 = 8,344.89/x
  3. Step 3: Cross multiply
    13,125.92x = 18,116.69 × 8,344.89
  4. Step 4: Simplify right side
    13,125.92x = 151,181,743.49
  5. Step 5: Solve for x
    x = 151,181,743.49/13,125.92
  6. Step 6: Final answer
    x = 11,517.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.