Home / 21,921.76-32,868.19-7,874.74

Finding the Fourth Proportional to 21,921.76, 32,868.19 and 7,874.74

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Solution

The fourth proportional to 21,921.76, 32,868.19 and 7,874.74 is: 11,806.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,921.76 : 32,868.19 = 7,874.74 : x
  2. Step 2: Convert to fraction form
    21,921.76/32,868.19 = 7,874.74/x
  3. Step 3: Cross multiply
    21,921.76x = 32,868.19 × 7,874.74
  4. Step 4: Simplify right side
    21,921.76x = 258,828,450.52
  5. Step 5: Solve for x
    x = 258,828,450.52/21,921.76
  6. Step 6: Final answer
    x = 11,806.92

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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.