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Finding the Fourth Proportional to 25,765.78, 38,652.32 and 8,231.51

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Solution

The fourth proportional to 25,765.78, 38,652.32 and 8,231.51 is: 12,348.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,765.78 : 38,652.32 = 8,231.51 : x
  2. Step 2: Convert to fraction form
    25,765.78/38,652.32 = 8,231.51/x
  3. Step 3: Cross multiply
    25,765.78x = 38,652.32 × 8,231.51
  4. Step 4: Simplify right side
    25,765.78x = 318,166,724.18
  5. Step 5: Solve for x
    x = 318,166,724.18/25,765.78
  6. Step 6: Final answer
    x = 12,348.42

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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.