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Finding the Fourth Proportional to 13,081.68, 18,055.80 and 8,049.06

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Solution

The fourth proportional to 13,081.68, 18,055.80 and 8,049.06 is: 11,109.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,081.68 : 18,055.80 = 8,049.06 : x
  2. Step 2: Convert to fraction form
    13,081.68/18,055.80 = 8,049.06/x
  3. Step 3: Cross multiply
    13,081.68x = 18,055.80 × 8,049.06
  4. Step 4: Simplify right side
    13,081.68x = 145,332,217.55
  5. Step 5: Solve for x
    x = 145,332,217.55/13,081.68
  6. Step 6: Final answer
    x = 11,109.60

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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.