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Finding the Fourth Proportional to 18,071.20, 27,103.20 and 8,711.20

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Solution

The fourth proportional to 18,071.20, 27,103.20 and 8,711.20 is: 13,065.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,071.20 : 27,103.20 = 8,711.20 : x
  2. Step 2: Convert to fraction form
    18,071.20/27,103.20 = 8,711.20/x
  3. Step 3: Cross multiply
    18,071.20x = 27,103.20 × 8,711.20
  4. Step 4: Simplify right side
    18,071.20x = 236,101,395.84
  5. Step 5: Solve for x
    x = 236,101,395.84/18,071.20
  6. Step 6: Final answer
    x = 13,065.06

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1.5x scale

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.