Home / 20,832.36-31,253.34-6,981

Finding the Fourth Proportional to 20,832.36, 31,253.34 and 6,981

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Solution

The fourth proportional to 20,832.36, 31,253.34 and 6,981 is: 10,473.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,832.36 : 31,253.34 = 6,981 : x
  2. Step 2: Convert to fraction form
    20,832.36/31,253.34 = 6,981/x
  3. Step 3: Cross multiply
    20,832.36x = 31,253.34 × 6,981
  4. Step 4: Simplify right side
    20,832.36x = 218,179,566.54
  5. Step 5: Solve for x
    x = 218,179,566.54/20,832.36
  6. Step 6: Final answer
    x = 10,473.11

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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.