Home / 21,263.74-31,874.78-7,926.98

Finding the Fourth Proportional to 21,263.74, 31,874.78 and 7,926.98

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Solution

The fourth proportional to 21,263.74, 31,874.78 and 7,926.98 is: 11,882.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,263.74 : 31,874.78 = 7,926.98 : x
  2. Step 2: Convert to fraction form
    21,263.74/31,874.78 = 7,926.98/x
  3. Step 3: Cross multiply
    21,263.74x = 31,874.78 × 7,926.98
  4. Step 4: Simplify right side
    21,263.74x = 252,670,743.56
  5. Step 5: Solve for x
    x = 252,670,743.56/21,263.74
  6. Step 6: Final answer
    x = 11,882.70

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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.