Home / 12,508.20-18,759.90-3,743.40

Finding the Fourth Proportional to 12,508.20, 18,759.90 and 3,743.40

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Solution

The fourth proportional to 12,508.20, 18,759.90 and 3,743.40 is: 5,614.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,508.20 : 18,759.90 = 3,743.40 : x
  2. Step 2: Convert to fraction form
    12,508.20/18,759.90 = 3,743.40/x
  3. Step 3: Cross multiply
    12,508.20x = 18,759.90 × 3,743.40
  4. Step 4: Simplify right side
    12,508.20x = 70,225,809.66
  5. Step 5: Solve for x
    x = 70,225,809.66/12,508.20
  6. Step 6: Final answer
    x = 5,614.38

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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.