Home / 10,418.50-15,627.75-3,122.50

Finding the Fourth Proportional to 10,418.50, 15,627.75 and 3,122.50

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Solution

The fourth proportional to 10,418.50, 15,627.75 and 3,122.50 is: 4,683.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,418.50 : 15,627.75 = 3,122.50 : x
  2. Step 2: Convert to fraction form
    10,418.50/15,627.75 = 3,122.50/x
  3. Step 3: Cross multiply
    10,418.50x = 15,627.75 × 3,122.50
  4. Step 4: Simplify right side
    10,418.50x = 48,797,649.38
  5. Step 5: Solve for x
    x = 48,797,649.38/10,418.50
  6. Step 6: Final answer
    x = 4,683.75

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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.