Home / 9,921.20-13,694.16-5,674.67

Finding the Fourth Proportional to 9,921.20, 13,694.16 and 5,674.67

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Solution

The fourth proportional to 9,921.20, 13,694.16 and 5,674.67 is: 7,832.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,921.20 : 13,694.16 = 5,674.67 : x
  2. Step 2: Convert to fraction form
    9,921.20/13,694.16 = 5,674.67/x
  3. Step 3: Cross multiply
    9,921.20x = 13,694.16 × 5,674.67
  4. Step 4: Simplify right side
    9,921.20x = 77,709,843.09
  5. Step 5: Solve for x
    x = 77,709,843.09/9,921.20
  6. Step 6: Final answer
    x = 7,832.71

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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.