Home / 20,766.30-28,656.36-11,334.66

Finding the Fourth Proportional to 20,766.30, 28,656.36 and 11,334.66

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Solution

The fourth proportional to 20,766.30, 28,656.36 and 11,334.66 is: 15,641.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,766.30 : 28,656.36 = 11,334.66 : x
  2. Step 2: Convert to fraction form
    20,766.30/28,656.36 = 11,334.66/x
  3. Step 3: Cross multiply
    20,766.30x = 28,656.36 × 11,334.66
  4. Step 4: Simplify right side
    20,766.30x = 324,810,097.44
  5. Step 5: Solve for x
    x = 324,810,097.44/20,766.30
  6. Step 6: Final answer
    x = 15,641.21

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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.