Home / 28,517.97-39,355.07-15,770.50

Finding the Fourth Proportional to 28,517.97, 39,355.07 and 15,770.50

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Solution

The fourth proportional to 28,517.97, 39,355.07 and 15,770.50 is: 21,763.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,517.97 : 39,355.07 = 15,770.50 : x
  2. Step 2: Convert to fraction form
    28,517.97/39,355.07 = 15,770.50/x
  3. Step 3: Cross multiply
    28,517.97x = 39,355.07 × 15,770.50
  4. Step 4: Simplify right side
    28,517.97x = 620,648,954.19
  5. Step 5: Solve for x
    x = 620,648,954.19/28,517.97
  6. Step 6: Final answer
    x = 21,763.43

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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.