Home / 13,961.89-20,937.33-5,640.34

Finding the Fourth Proportional to 13,961.89, 20,937.33 and 5,640.34

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Solution

The fourth proportional to 13,961.89, 20,937.33 and 5,640.34 is: 8,458.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,961.89 : 20,937.33 = 5,640.34 : x
  2. Step 2: Convert to fraction form
    13,961.89/20,937.33 = 5,640.34/x
  3. Step 3: Cross multiply
    13,961.89x = 20,937.33 × 5,640.34
  4. Step 4: Simplify right side
    13,961.89x = 118,093,659.89
  5. Step 5: Solve for x
    x = 118,093,659.89/13,961.89
  6. Step 6: Final answer
    x = 8,458.29

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1.5x scale

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.