Home / 20,982.66-31,466.03-6,938.48

Finding the Fourth Proportional to 20,982.66, 31,466.03 and 6,938.48

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Solution

The fourth proportional to 20,982.66, 31,466.03 and 6,938.48 is: 10,405.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,982.66 : 31,466.03 = 6,938.48 : x
  2. Step 2: Convert to fraction form
    20,982.66/31,466.03 = 6,938.48/x
  3. Step 3: Cross multiply
    20,982.66x = 31,466.03 × 6,938.48
  4. Step 4: Simplify right side
    20,982.66x = 218,326,227.81
  5. Step 5: Solve for x
    x = 218,326,227.81/20,982.66
  6. Step 6: Final answer
    x = 10,405.08

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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.