Home / 13,458.73-20,189.13-4,099.55

Finding the Fourth Proportional to 13,458.73, 20,189.13 and 4,099.55

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Solution

The fourth proportional to 13,458.73, 20,189.13 and 4,099.55 is: 6,149.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,458.73 : 20,189.13 = 4,099.55 : x
  2. Step 2: Convert to fraction form
    13,458.73/20,189.13 = 4,099.55/x
  3. Step 3: Cross multiply
    13,458.73x = 20,189.13 × 4,099.55
  4. Step 4: Simplify right side
    13,458.73x = 82,766,347.89
  5. Step 5: Solve for x
    x = 82,766,347.89/13,458.73
  6. Step 6: Final answer
    x = 6,149.64

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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.