Home / 13,778.97-20,650.20-5,005.44

Finding the Fourth Proportional to 13,778.97, 20,650.20 and 5,005.44

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Solution

The fourth proportional to 13,778.97, 20,650.20 and 5,005.44 is: 7,501.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,778.97 : 20,650.20 = 5,005.44 : x
  2. Step 2: Convert to fraction form
    13,778.97/20,650.20 = 5,005.44/x
  3. Step 3: Cross multiply
    13,778.97x = 20,650.20 × 5,005.44
  4. Step 4: Simplify right side
    13,778.97x = 103,363,337.09
  5. Step 5: Solve for x
    x = 103,363,337.09/13,778.97
  6. Step 6: Final answer
    x = 7,501.53

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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.