Home / 13,516.92-18,645.57-8,135.61

Finding the Fourth Proportional to 13,516.92, 18,645.57 and 8,135.61

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Solution

The fourth proportional to 13,516.92, 18,645.57 and 8,135.61 is: 11,222.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,516.92 : 18,645.57 = 8,135.61 : x
  2. Step 2: Convert to fraction form
    13,516.92/18,645.57 = 8,135.61/x
  3. Step 3: Cross multiply
    13,516.92x = 18,645.57 × 8,135.61
  4. Step 4: Simplify right side
    13,516.92x = 151,693,085.75
  5. Step 5: Solve for x
    x = 151,693,085.75/13,516.92
  6. Step 6: Final answer
    x = 11,222.46

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Double scale
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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.