Home / 9,121.64-13,666.05-8,481.94

Finding the Fourth Proportional to 9,121.64, 13,666.05 and 8,481.94

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Solution

The fourth proportional to 9,121.64, 13,666.05 and 8,481.94 is: 12,707.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,121.64 : 13,666.05 = 8,481.94 : x
  2. Step 2: Convert to fraction form
    9,121.64/13,666.05 = 8,481.94/x
  3. Step 3: Cross multiply
    9,121.64x = 13,666.05 × 8,481.94
  4. Step 4: Simplify right side
    9,121.64x = 115,914,581.97
  5. Step 5: Solve for x
    x = 115,914,581.97/9,121.64
  6. Step 6: Final answer
    x = 12,707.65

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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.