Home / 20,766.62-28,657.52-11,335.25

Finding the Fourth Proportional to 20,766.62, 28,657.52 and 11,335.25

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Solution

The fourth proportional to 20,766.62, 28,657.52 and 11,335.25 is: 15,642.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,766.62 : 28,657.52 = 11,335.25 : x
  2. Step 2: Convert to fraction form
    20,766.62/28,657.52 = 11,335.25/x
  3. Step 3: Cross multiply
    20,766.62x = 28,657.52 × 11,335.25
  4. Step 4: Simplify right side
    20,766.62x = 324,839,953.62
  5. Step 5: Solve for x
    x = 324,839,953.62/20,766.62
  6. Step 6: Final answer
    x = 15,642.41

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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.