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Finding the Fourth Proportional to 13,081.97, 18,052.44 and 7,113.42

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Solution

The fourth proportional to 13,081.97, 18,052.44 and 7,113.42 is: 9,816.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,081.97 : 18,052.44 = 7,113.42 : x
  2. Step 2: Convert to fraction form
    13,081.97/18,052.44 = 7,113.42/x
  3. Step 3: Cross multiply
    13,081.97x = 18,052.44 × 7,113.42
  4. Step 4: Simplify right side
    13,081.97x = 128,414,587.74
  5. Step 5: Solve for x
    x = 128,414,587.74/13,081.97
  6. Step 6: Final answer
    x = 9,816.15

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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.