Home / 28,517.55-39,353.46-15,770.37

Finding the Fourth Proportional to 28,517.55, 39,353.46 and 15,770.37

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Solution

The fourth proportional to 28,517.55, 39,353.46 and 15,770.37 is: 21,762.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,517.55 : 39,353.46 = 15,770.37 : x
  2. Step 2: Convert to fraction form
    28,517.55/39,353.46 = 15,770.37/x
  3. Step 3: Cross multiply
    28,517.55x = 39,353.46 × 15,770.37
  4. Step 4: Simplify right side
    28,517.55x = 620,618,713.42
  5. Step 5: Solve for x
    x = 620,618,713.42/28,517.55
  6. Step 6: Final answer
    x = 21,762.70

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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.