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Finding the Fourth Proportional to 18,346.60, 27,511.80 and 7,249.60

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Solution

The fourth proportional to 18,346.60, 27,511.80 and 7,249.60 is: 10,871.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,346.60 : 27,511.80 = 7,249.60 : x
  2. Step 2: Convert to fraction form
    18,346.60/27,511.80 = 7,249.60/x
  3. Step 3: Cross multiply
    18,346.60x = 27,511.80 × 7,249.60
  4. Step 4: Simplify right side
    18,346.60x = 199,449,545.28
  5. Step 5: Solve for x
    x = 199,449,545.28/18,346.60
  6. Step 6: Final answer
    x = 10,871.20

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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.