Home / 25,728.72-35,505.96-15,118.56

Finding the Fourth Proportional to 25,728.72, 35,505.96 and 15,118.56

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Solution

The fourth proportional to 25,728.72, 35,505.96 and 15,118.56 is: 20,863.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,728.72 : 35,505.96 = 15,118.56 : x
  2. Step 2: Convert to fraction form
    25,728.72/35,505.96 = 15,118.56/x
  3. Step 3: Cross multiply
    25,728.72x = 35,505.96 × 15,118.56
  4. Step 4: Simplify right side
    25,728.72x = 536,798,986.62
  5. Step 5: Solve for x
    x = 536,798,986.62/25,728.72
  6. Step 6: Final answer
    x = 20,863.80

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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.