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Finding the Fourth Proportional to 18,099.80, 27,130.76 and 7,575.85

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Solution

The fourth proportional to 18,099.80, 27,130.76 and 7,575.85 is: 11,355.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,099.80 : 27,130.76 = 7,575.85 : x
  2. Step 2: Convert to fraction form
    18,099.80/27,130.76 = 7,575.85/x
  3. Step 3: Cross multiply
    18,099.80x = 27,130.76 × 7,575.85
  4. Step 4: Simplify right side
    18,099.80x = 205,538,530.27
  5. Step 5: Solve for x
    x = 205,538,530.27/18,099.80
  6. Step 6: Final answer
    x = 11,355.85

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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.