Home / 13,608.93-20,408.15-5,287.85

Finding the Fourth Proportional to 13,608.93, 20,408.15 and 5,287.85

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Solution

The fourth proportional to 13,608.93, 20,408.15 and 5,287.85 is: 7,929.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,608.93 : 20,408.15 = 5,287.85 : x
  2. Step 2: Convert to fraction form
    13,608.93/20,408.15 = 5,287.85/x
  3. Step 3: Cross multiply
    13,608.93x = 20,408.15 × 5,287.85
  4. Step 4: Simplify right side
    13,608.93x = 107,915,338.48
  5. Step 5: Solve for x
    x = 107,915,338.48/13,608.93
  6. Step 6: Final answer
    x = 7,929.74

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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.