Home / 25,728.08-35,489.88-15,115.52

Finding the Fourth Proportional to 25,728.08, 35,489.88 and 15,115.52

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Solution

The fourth proportional to 25,728.08, 35,489.88 and 15,115.52 is: 20,850.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,728.08 : 35,489.88 = 15,115.52 : x
  2. Step 2: Convert to fraction form
    25,728.08/35,489.88 = 15,115.52/x
  3. Step 3: Cross multiply
    25,728.08x = 35,489.88 × 15,115.52
  4. Step 4: Simplify right side
    25,728.08x = 536,447,990.94
  5. Step 5: Solve for x
    x = 536,447,990.94/25,728.08
  6. Step 6: Final answer
    x = 20,850.68

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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.