Home / 21,022.43-31,531.82-6,977.88

Finding the Fourth Proportional to 21,022.43, 31,531.82 and 6,977.88

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Solution

The fourth proportional to 21,022.43, 31,531.82 and 6,977.88 is: 10,466.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,022.43 : 31,531.82 = 6,977.88 : x
  2. Step 2: Convert to fraction form
    21,022.43/31,531.82 = 6,977.88/x
  3. Step 3: Cross multiply
    21,022.43x = 31,531.82 × 6,977.88
  4. Step 4: Simplify right side
    21,022.43x = 220,025,221.25
  5. Step 5: Solve for x
    x = 220,025,221.25/21,022.43
  6. Step 6: Final answer
    x = 10,466.22

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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.