Home / 20,766.87-28,657.85-11,335.43

Finding the Fourth Proportional to 20,766.87, 28,657.85 and 11,335.43

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Solution

The fourth proportional to 20,766.87, 28,657.85 and 11,335.43 is: 15,642.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,766.87 : 28,657.85 = 11,335.43 : x
  2. Step 2: Convert to fraction form
    20,766.87/28,657.85 = 11,335.43/x
  3. Step 3: Cross multiply
    20,766.87x = 28,657.85 × 11,335.43
  4. Step 4: Simplify right side
    20,766.87x = 324,848,852.66
  5. Step 5: Solve for x
    x = 324,848,852.66/20,766.87
  6. Step 6: Final answer
    x = 15,642.65

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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.