Home / 11,132.72-16,703.88-4,209.20

Finding the Fourth Proportional to 11,132.72, 16,703.88 and 4,209.20

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Solution

The fourth proportional to 11,132.72, 16,703.88 and 4,209.20 is: 6,315.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,132.72 : 16,703.88 = 4,209.20 : x
  2. Step 2: Convert to fraction form
    11,132.72/16,703.88 = 4,209.20/x
  3. Step 3: Cross multiply
    11,132.72x = 16,703.88 × 4,209.20
  4. Step 4: Simplify right side
    11,132.72x = 70,309,971.70
  5. Step 5: Solve for x
    x = 70,309,971.70/11,132.72
  6. Step 6: Final answer
    x = 6,315.61

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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.