Home / 12,688.11-17,514.63-8,600.85

Finding the Fourth Proportional to 12,688.11, 17,514.63 and 8,600.85

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Solution

The fourth proportional to 12,688.11, 17,514.63 and 8,600.85 is: 11,872.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,688.11 : 17,514.63 = 8,600.85 : x
  2. Step 2: Convert to fraction form
    12,688.11/17,514.63 = 8,600.85/x
  3. Step 3: Cross multiply
    12,688.11x = 17,514.63 × 8,600.85
  4. Step 4: Simplify right side
    12,688.11x = 150,640,705.44
  5. Step 5: Solve for x
    x = 150,640,705.44/12,688.11
  6. Step 6: Final answer
    x = 11,872.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.