Home / 25,981.62-38,977.32-8,456.46

Finding the Fourth Proportional to 25,981.62, 38,977.32 and 8,456.46

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Solution

The fourth proportional to 25,981.62, 38,977.32 and 8,456.46 is: 12,686.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,981.62 : 38,977.32 = 8,456.46 : x
  2. Step 2: Convert to fraction form
    25,981.62/38,977.32 = 8,456.46/x
  3. Step 3: Cross multiply
    25,981.62x = 38,977.32 × 8,456.46
  4. Step 4: Simplify right side
    25,981.62x = 329,610,147.49
  5. Step 5: Solve for x
    x = 329,610,147.49/25,981.62
  6. Step 6: Final answer
    x = 12,686.28

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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.