Home / 10,517.91-15,774.63-3,122.43

Finding the Fourth Proportional to 10,517.91, 15,774.63 and 3,122.43

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Solution

The fourth proportional to 10,517.91, 15,774.63 and 3,122.43 is: 4,682.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,517.91 : 15,774.63 = 3,122.43 : x
  2. Step 2: Convert to fraction form
    10,517.91/15,774.63 = 3,122.43/x
  3. Step 3: Cross multiply
    10,517.91x = 15,774.63 × 3,122.43
  4. Step 4: Simplify right side
    10,517.91x = 49,255,177.95
  5. Step 5: Solve for x
    x = 49,255,177.95/10,517.91
  6. Step 6: Final answer
    x = 4,682.98

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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.