Home / 21,034.06-31,539.26-6,986.57

Finding the Fourth Proportional to 21,034.06, 31,539.26 and 6,986.57

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Solution

The fourth proportional to 21,034.06, 31,539.26 and 6,986.57 is: 10,475.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,034.06 : 31,539.26 = 6,986.57 : x
  2. Step 2: Convert to fraction form
    21,034.06/31,539.26 = 6,986.57/x
  3. Step 3: Cross multiply
    21,034.06x = 31,539.26 × 6,986.57
  4. Step 4: Simplify right side
    21,034.06x = 220,351,133.96
  5. Step 5: Solve for x
    x = 220,351,133.96/21,034.06
  6. Step 6: Final answer
    x = 10,475.92

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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.