Home / 12,129.08-18,180.12-5,107.04

Finding the Fourth Proportional to 12,129.08, 18,180.12 and 5,107.04

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Solution

The fourth proportional to 12,129.08, 18,180.12 and 5,107.04 is: 7,654.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,129.08 : 18,180.12 = 5,107.04 : x
  2. Step 2: Convert to fraction form
    12,129.08/18,180.12 = 5,107.04/x
  3. Step 3: Cross multiply
    12,129.08x = 18,180.12 × 5,107.04
  4. Step 4: Simplify right side
    12,129.08x = 92,846,600.04
  5. Step 5: Solve for x
    x = 92,846,600.04/12,129.08
  6. Step 6: Final answer
    x = 7,654.88

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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.