Home / 21,034.31-31,539.63-6,986.82

Finding the Fourth Proportional to 21,034.31, 31,539.63 and 6,986.82

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Solution

The fourth proportional to 21,034.31, 31,539.63 and 6,986.82 is: 10,476.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,034.31 : 31,539.63 = 6,986.82 : x
  2. Step 2: Convert to fraction form
    21,034.31/31,539.63 = 6,986.82/x
  3. Step 3: Cross multiply
    21,034.31x = 31,539.63 × 6,986.82
  4. Step 4: Simplify right side
    21,034.31x = 220,361,717.68
  5. Step 5: Solve for x
    x = 220,361,717.68/21,034.31
  6. Step 6: Final answer
    x = 10,476.30

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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.