Home / 21,919.84-32,871.67-7,876.09

Finding the Fourth Proportional to 21,919.84, 32,871.67 and 7,876.09

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Solution

The fourth proportional to 21,919.84, 32,871.67 and 7,876.09 is: 11,811.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,919.84 : 32,871.67 = 7,876.09 : x
  2. Step 2: Convert to fraction form
    21,919.84/32,871.67 = 7,876.09/x
  3. Step 3: Cross multiply
    21,919.84x = 32,871.67 × 7,876.09
  4. Step 4: Simplify right side
    21,919.84x = 258,900,231.37
  5. Step 5: Solve for x
    x = 258,900,231.37/21,919.84
  6. Step 6: Final answer
    x = 11,811.23

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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.