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Finding the Fourth Proportional to 13,102.53, 18,081.07 and 7,134.15

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Solution

The fourth proportional to 13,102.53, 18,081.07 and 7,134.15 is: 9,844.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,102.53 : 18,081.07 = 7,134.15 : x
  2. Step 2: Convert to fraction form
    13,102.53/18,081.07 = 7,134.15/x
  3. Step 3: Cross multiply
    13,102.53x = 18,081.07 × 7,134.15
  4. Step 4: Simplify right side
    13,102.53x = 128,993,065.54
  5. Step 5: Solve for x
    x = 128,993,065.54/13,102.53
  6. Step 6: Final answer
    x = 9,844.90

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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.