Home / 20,766.24-28,657.71-11,334.60

Finding the Fourth Proportional to 20,766.24, 28,657.71 and 11,334.60

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Solution

The fourth proportional to 20,766.24, 28,657.71 and 11,334.60 is: 15,641.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,766.24 : 28,657.71 = 11,334.60 : x
  2. Step 2: Convert to fraction form
    20,766.24/28,657.71 = 11,334.60/x
  3. Step 3: Cross multiply
    20,766.24x = 28,657.71 × 11,334.60
  4. Step 4: Simplify right side
    20,766.24x = 324,823,679.77
  5. Step 5: Solve for x
    x = 324,823,679.77/20,766.24
  6. Step 6: Final answer
    x = 15,641.91

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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.