Home / 13,942.85-20,915.24-5,622.95

Finding the Fourth Proportional to 13,942.85, 20,915.24 and 5,622.95

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Solution

The fourth proportional to 13,942.85, 20,915.24 and 5,622.95 is: 8,434.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,942.85 : 20,915.24 = 5,622.95 : x
  2. Step 2: Convert to fraction form
    13,942.85/20,915.24 = 5,622.95/x
  3. Step 3: Cross multiply
    13,942.85x = 20,915.24 × 5,622.95
  4. Step 4: Simplify right side
    13,942.85x = 117,605,244.18
  5. Step 5: Solve for x
    x = 117,605,244.18/13,942.85
  6. Step 6: Final answer
    x = 8,434.81

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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.