Home / 20,766.34-28,656.75-11,334.97

Finding the Fourth Proportional to 20,766.34, 28,656.75 and 11,334.97

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Solution

The fourth proportional to 20,766.34, 28,656.75 and 11,334.97 is: 15,641.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,766.34 : 28,656.75 = 11,334.97 : x
  2. Step 2: Convert to fraction form
    20,766.34/28,656.75 = 11,334.97/x
  3. Step 3: Cross multiply
    20,766.34x = 28,656.75 × 11,334.97
  4. Step 4: Simplify right side
    20,766.34x = 324,823,401.55
  5. Step 5: Solve for x
    x = 324,823,401.55/20,766.34
  6. Step 6: Final answer
    x = 15,641.82

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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.