Home / 10,486.39-15,732.31-3,912.63

Finding the Fourth Proportional to 10,486.39, 15,732.31 and 3,912.63

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Solution

The fourth proportional to 10,486.39, 15,732.31 and 3,912.63 is: 5,869.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,486.39 : 15,732.31 = 3,912.63 : x
  2. Step 2: Convert to fraction form
    10,486.39/15,732.31 = 3,912.63/x
  3. Step 3: Cross multiply
    10,486.39x = 15,732.31 × 3,912.63
  4. Step 4: Simplify right side
    10,486.39x = 61,554,619.63
  5. Step 5: Solve for x
    x = 61,554,619.63/10,486.39
  6. Step 6: Final answer
    x = 5,869.95

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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.