Home / 11,209.20-15,450.48-8,963.88

Finding the Fourth Proportional to 11,209.20, 15,450.48 and 8,963.88

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Solution

The fourth proportional to 11,209.20, 15,450.48 and 8,963.88 is: 12,355.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,209.20 : 15,450.48 = 8,963.88 : x
  2. Step 2: Convert to fraction form
    11,209.20/15,450.48 = 8,963.88/x
  3. Step 3: Cross multiply
    11,209.20x = 15,450.48 × 8,963.88
  4. Step 4: Simplify right side
    11,209.20x = 138,496,248.66
  5. Step 5: Solve for x
    x = 138,496,248.66/11,209.20
  6. Step 6: Final answer
    x = 12,355.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.