Home / 11,820.71-17,734.14-4,425.75

Finding the Fourth Proportional to 11,820.71, 17,734.14 and 4,425.75

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Solution

The fourth proportional to 11,820.71, 17,734.14 and 4,425.75 is: 6,639.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,820.71 : 17,734.14 = 4,425.75 : x
  2. Step 2: Convert to fraction form
    11,820.71/17,734.14 = 4,425.75/x
  3. Step 3: Cross multiply
    11,820.71x = 17,734.14 × 4,425.75
  4. Step 4: Simplify right side
    11,820.71x = 78,486,870.11
  5. Step 5: Solve for x
    x = 78,486,870.11/11,820.71
  6. Step 6: Final answer
    x = 6,639.78

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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.