Home / 25,403.85-38,108.31-8,761.68

Finding the Fourth Proportional to 25,403.85, 38,108.31 and 8,761.68

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Solution

The fourth proportional to 25,403.85, 38,108.31 and 8,761.68 is: 13,143.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,403.85 : 38,108.31 = 8,761.68 : x
  2. Step 2: Convert to fraction form
    25,403.85/38,108.31 = 8,761.68/x
  3. Step 3: Cross multiply
    25,403.85x = 38,108.31 × 8,761.68
  4. Step 4: Simplify right side
    25,403.85x = 333,892,817.56
  5. Step 5: Solve for x
    x = 333,892,817.56/25,403.85
  6. Step 6: Final answer
    x = 13,143.39

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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.