Home / 12,288.12-18,432.45-3,523.38

Finding the Fourth Proportional to 12,288.12, 18,432.45 and 3,523.38

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Solution

The fourth proportional to 12,288.12, 18,432.45 and 3,523.38 is: 5,285.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,288.12 : 18,432.45 = 3,523.38 : x
  2. Step 2: Convert to fraction form
    12,288.12/18,432.45 = 3,523.38/x
  3. Step 3: Cross multiply
    12,288.12x = 18,432.45 × 3,523.38
  4. Step 4: Simplify right side
    12,288.12x = 64,944,525.68
  5. Step 5: Solve for x
    x = 64,944,525.68/12,288.12
  6. Step 6: Final answer
    x = 5,285.15

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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.