Home / 11,688.91-17,505.37-8,517.85

Finding the Fourth Proportional to 11,688.91, 17,505.37 and 8,517.85

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Solution

The fourth proportional to 11,688.91, 17,505.37 and 8,517.85 is: 12,756.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,688.91 : 17,505.37 = 8,517.85 : x
  2. Step 2: Convert to fraction form
    11,688.91/17,505.37 = 8,517.85/x
  3. Step 3: Cross multiply
    11,688.91x = 17,505.37 × 8,517.85
  4. Step 4: Simplify right side
    11,688.91x = 149,108,010.21
  5. Step 5: Solve for x
    x = 149,108,010.21/11,688.91
  6. Step 6: Final answer
    x = 12,756.37

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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.