Home / 25,981.12-38,976.54-8,455.96

Finding the Fourth Proportional to 25,981.12, 38,976.54 and 8,455.96

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Solution

The fourth proportional to 25,981.12, 38,976.54 and 8,455.96 is: 12,685.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,981.12 : 38,976.54 = 8,455.96 : x
  2. Step 2: Convert to fraction form
    25,981.12/38,976.54 = 8,455.96/x
  3. Step 3: Cross multiply
    25,981.12x = 38,976.54 × 8,455.96
  4. Step 4: Simplify right side
    25,981.12x = 329,584,063.18
  5. Step 5: Solve for x
    x = 329,584,063.18/25,981.12
  6. Step 6: Final answer
    x = 12,685.52

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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.