Home / 28,452.87-42,675.56-8,729.78

Finding the Fourth Proportional to 28,452.87, 42,675.56 and 8,729.78

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Solution

The fourth proportional to 28,452.87, 42,675.56 and 8,729.78 is: 13,093.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,452.87 : 42,675.56 = 8,729.78 : x
  2. Step 2: Convert to fraction form
    28,452.87/42,675.56 = 8,729.78/x
  3. Step 3: Cross multiply
    28,452.87x = 42,675.56 × 8,729.78
  4. Step 4: Simplify right side
    28,452.87x = 372,548,025.89
  5. Step 5: Solve for x
    x = 372,548,025.89/28,452.87
  6. Step 6: Final answer
    x = 13,093.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.