Home / 20,738.76-31,112.91-6,506.43

Finding the Fourth Proportional to 20,738.76, 31,112.91 and 6,506.43

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Solution

The fourth proportional to 20,738.76, 31,112.91 and 6,506.43 is: 9,761.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,738.76 : 31,112.91 = 6,506.43 : x
  2. Step 2: Convert to fraction form
    20,738.76/31,112.91 = 6,506.43/x
  3. Step 3: Cross multiply
    20,738.76x = 31,112.91 × 6,506.43
  4. Step 4: Simplify right side
    20,738.76x = 202,433,971.01
  5. Step 5: Solve for x
    x = 202,433,971.01/20,738.76
  6. Step 6: Final answer
    x = 9,761.14

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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.