Home / 13,974.72-20,955.60-5,648.16

Finding the Fourth Proportional to 13,974.72, 20,955.60 and 5,648.16

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Solution

The fourth proportional to 13,974.72, 20,955.60 and 5,648.16 is: 8,469.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,974.72 : 20,955.60 = 5,648.16 : x
  2. Step 2: Convert to fraction form
    13,974.72/20,955.60 = 5,648.16/x
  3. Step 3: Cross multiply
    13,974.72x = 20,955.60 × 5,648.16
  4. Step 4: Simplify right side
    13,974.72x = 118,360,581.70
  5. Step 5: Solve for x
    x = 118,360,581.70/13,974.72
  6. Step 6: Final answer
    x = 8,469.62

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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.