Home / 20,799.72-31,211.94-7,661.32

Finding the Fourth Proportional to 20,799.72, 31,211.94 and 7,661.32

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Solution

The fourth proportional to 20,799.72, 31,211.94 and 7,661.32 is: 11,496.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,799.72 : 31,211.94 = 7,661.32 : x
  2. Step 2: Convert to fraction form
    20,799.72/31,211.94 = 7,661.32/x
  3. Step 3: Cross multiply
    20,799.72x = 31,211.94 × 7,661.32
  4. Step 4: Simplify right side
    20,799.72x = 239,124,660.16
  5. Step 5: Solve for x
    x = 239,124,660.16/20,799.72
  6. Step 6: Final answer
    x = 11,496.53

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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.