Home / 11,399.67-15,727.22-6,921.72

Finding the Fourth Proportional to 11,399.67, 15,727.22 and 6,921.72

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Solution

The fourth proportional to 11,399.67, 15,727.22 and 6,921.72 is: 9,549.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,399.67 : 15,727.22 = 6,921.72 : x
  2. Step 2: Convert to fraction form
    11,399.67/15,727.22 = 6,921.72/x
  3. Step 3: Cross multiply
    11,399.67x = 15,727.22 × 6,921.72
  4. Step 4: Simplify right side
    11,399.67x = 108,859,378.61
  5. Step 5: Solve for x
    x = 108,859,378.61/11,399.67
  6. Step 6: Final answer
    x = 9,549.34

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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.