Home / 25,577.91-38,315.84-20,321.82

Finding the Fourth Proportional to 25,577.91, 38,315.84 and 20,321.82

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Solution

The fourth proportional to 25,577.91, 38,315.84 and 20,321.82 is: 30,442.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,577.91 : 38,315.84 = 20,321.82 : x
  2. Step 2: Convert to fraction form
    25,577.91/38,315.84 = 20,321.82/x
  3. Step 3: Cross multiply
    25,577.91x = 38,315.84 × 20,321.82
  4. Step 4: Simplify right side
    25,577.91x = 778,647,502.02
  5. Step 5: Solve for x
    x = 778,647,502.02/25,577.91
  6. Step 6: Final answer
    x = 30,442.19

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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.