Home / 20,881.06-31,314.90-6,837.28

Finding the Fourth Proportional to 20,881.06, 31,314.90 and 6,837.28

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Solution

The fourth proportional to 20,881.06, 31,314.90 and 6,837.28 is: 10,253.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,881.06 : 31,314.90 = 6,837.28 : x
  2. Step 2: Convert to fraction form
    20,881.06/31,314.90 = 6,837.28/x
  3. Step 3: Cross multiply
    20,881.06x = 31,314.90 × 6,837.28
  4. Step 4: Simplify right side
    20,881.06x = 214,108,686.82
  5. Step 5: Solve for x
    x = 214,108,686.82/20,881.06
  6. Step 6: Final answer
    x = 10,253.73

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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.