Home / 21,270.22-31,905.33-5,687.44

Finding the Fourth Proportional to 21,270.22, 31,905.33 and 5,687.44

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Solution

The fourth proportional to 21,270.22, 31,905.33 and 5,687.44 is: 8,531.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,270.22 : 31,905.33 = 5,687.44 : x
  2. Step 2: Convert to fraction form
    21,270.22/31,905.33 = 5,687.44/x
  3. Step 3: Cross multiply
    21,270.22x = 31,905.33 × 5,687.44
  4. Step 4: Simplify right side
    21,270.22x = 181,459,548.96
  5. Step 5: Solve for x
    x = 181,459,548.96/21,270.22
  6. Step 6: Final answer
    x = 8,531.16

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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.