Home / 12,440.71-18,646.26-8,672.12

Finding the Fourth Proportional to 12,440.71, 18,646.26 and 8,672.12

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Solution

The fourth proportional to 12,440.71, 18,646.26 and 8,672.12 is: 12,997.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,440.71 : 18,646.26 = 8,672.12 : x
  2. Step 2: Convert to fraction form
    12,440.71/18,646.26 = 8,672.12/x
  3. Step 3: Cross multiply
    12,440.71x = 18,646.26 × 8,672.12
  4. Step 4: Simplify right side
    12,440.71x = 161,702,604.27
  5. Step 5: Solve for x
    x = 161,702,604.27/12,440.71
  6. Step 6: Final answer
    x = 12,997.86

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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.