Home / 10,209.27-15,315.30-3,189.90

Finding the Fourth Proportional to 10,209.27, 15,315.30 and 3,189.90

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Solution

The fourth proportional to 10,209.27, 15,315.30 and 3,189.90 is: 4,785.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,209.27 : 15,315.30 = 3,189.90 : x
  2. Step 2: Convert to fraction form
    10,209.27/15,315.30 = 3,189.90/x
  3. Step 3: Cross multiply
    10,209.27x = 15,315.30 × 3,189.90
  4. Step 4: Simplify right side
    10,209.27x = 48,854,275.47
  5. Step 5: Solve for x
    x = 48,854,275.47/10,209.27
  6. Step 6: Final answer
    x = 4,785.29

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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.