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Finding the Fourth Proportional to 18,179.20, 27,235.20 and 10,364.80

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Solution

The fourth proportional to 18,179.20, 27,235.20 and 10,364.80 is: 15,528.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,179.20 : 27,235.20 = 10,364.80 : x
  2. Step 2: Convert to fraction form
    18,179.20/27,235.20 = 10,364.80/x
  3. Step 3: Cross multiply
    18,179.20x = 27,235.20 × 10,364.80
  4. Step 4: Simplify right side
    18,179.20x = 282,287,400.96
  5. Step 5: Solve for x
    x = 282,287,400.96/18,179.20
  6. Step 6: Final answer
    x = 15,528.04

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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.