Home / 13,600.50-20,404.39-5,280.78

Finding the Fourth Proportional to 13,600.50, 20,404.39 and 5,280.78

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Solution

The fourth proportional to 13,600.50, 20,404.39 and 5,280.78 is: 7,922.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,600.50 : 20,404.39 = 5,280.78 : x
  2. Step 2: Convert to fraction form
    13,600.50/20,404.39 = 5,280.78/x
  3. Step 3: Cross multiply
    13,600.50x = 20,404.39 × 5,280.78
  4. Step 4: Simplify right side
    13,600.50x = 107,751,094.62
  5. Step 5: Solve for x
    x = 107,751,094.62/13,600.50
  6. Step 6: Final answer
    x = 7,922.58

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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.