Home / 25,728.96-38,568.80-8,187.38

Finding the Fourth Proportional to 25,728.96, 38,568.80 and 8,187.38

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Solution

The fourth proportional to 25,728.96, 38,568.80 and 8,187.38 is: 12,273.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,728.96 : 38,568.80 = 8,187.38 : x
  2. Step 2: Convert to fraction form
    25,728.96/38,568.80 = 8,187.38/x
  3. Step 3: Cross multiply
    25,728.96x = 38,568.80 × 8,187.38
  4. Step 4: Simplify right side
    25,728.96x = 315,777,421.74
  5. Step 5: Solve for x
    x = 315,777,421.74/25,728.96
  6. Step 6: Final answer
    x = 12,273.23

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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.