Home / 13,540.87-20,313.60-4,180.69

Finding the Fourth Proportional to 13,540.87, 20,313.60 and 4,180.69

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Solution

The fourth proportional to 13,540.87, 20,313.60 and 4,180.69 is: 6,271.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,540.87 : 20,313.60 = 4,180.69 : x
  2. Step 2: Convert to fraction form
    13,540.87/20,313.60 = 4,180.69/x
  3. Step 3: Cross multiply
    13,540.87x = 20,313.60 × 4,180.69
  4. Step 4: Simplify right side
    13,540.87x = 84,924,864.38
  5. Step 5: Solve for x
    x = 84,924,864.38/13,540.87
  6. Step 6: Final answer
    x = 6,271.74

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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.