Home / 12,474.20-18,708.90-3,709.40

Finding the Fourth Proportional to 12,474.20, 18,708.90 and 3,709.40

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Solution

The fourth proportional to 12,474.20, 18,708.90 and 3,709.40 is: 5,563.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,474.20 : 18,708.90 = 3,709.40 : x
  2. Step 2: Convert to fraction form
    12,474.20/18,708.90 = 3,709.40/x
  3. Step 3: Cross multiply
    12,474.20x = 18,708.90 × 3,709.40
  4. Step 4: Simplify right side
    12,474.20x = 69,398,793.66
  5. Step 5: Solve for x
    x = 69,398,793.66/12,474.20
  6. Step 6: Final answer
    x = 5,563.39

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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.