Home / 12,343.78-18,517.12-4,336.09

Finding the Fourth Proportional to 12,343.78, 18,517.12 and 4,336.09

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Solution

The fourth proportional to 12,343.78, 18,517.12 and 4,336.09 is: 6,504.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,343.78 : 18,517.12 = 4,336.09 : x
  2. Step 2: Convert to fraction form
    12,343.78/18,517.12 = 4,336.09/x
  3. Step 3: Cross multiply
    12,343.78x = 18,517.12 × 4,336.09
  4. Step 4: Simplify right side
    12,343.78x = 80,291,898.86
  5. Step 5: Solve for x
    x = 80,291,898.86/12,343.78
  6. Step 6: Final answer
    x = 6,504.64

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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.