Home / 21,072.83-31,608.90-6,281.82

Finding the Fourth Proportional to 21,072.83, 31,608.90 and 6,281.82

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Solution

The fourth proportional to 21,072.83, 31,608.90 and 6,281.82 is: 9,422.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,072.83 : 31,608.90 = 6,281.82 : x
  2. Step 2: Convert to fraction form
    21,072.83/31,608.90 = 6,281.82/x
  3. Step 3: Cross multiply
    21,072.83x = 31,608.90 × 6,281.82
  4. Step 4: Simplify right side
    21,072.83x = 198,561,420.20
  5. Step 5: Solve for x
    x = 198,561,420.20/21,072.83
  6. Step 6: Final answer
    x = 9,422.63

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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.