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Finding the Fourth Proportional to 18,825.82, 28,241.06 and 5,678.17

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Solution

The fourth proportional to 18,825.82, 28,241.06 and 5,678.17 is: 8,517.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,825.82 : 28,241.06 = 5,678.17 : x
  2. Step 2: Convert to fraction form
    18,825.82/28,241.06 = 5,678.17/x
  3. Step 3: Cross multiply
    18,825.82x = 28,241.06 × 5,678.17
  4. Step 4: Simplify right side
    18,825.82x = 160,357,440.67
  5. Step 5: Solve for x
    x = 160,357,440.67/18,825.82
  6. Step 6: Final answer
    x = 8,517.95

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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.