Home / 21,908.80-32,880.78-11,381.92

Finding the Fourth Proportional to 21,908.80, 32,880.78 and 11,381.92

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Solution

The fourth proportional to 21,908.80, 32,880.78 and 11,381.92 is: 17,082.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,908.80 : 32,880.78 = 11,381.92 : x
  2. Step 2: Convert to fraction form
    21,908.80/32,880.78 = 11,381.92/x
  3. Step 3: Cross multiply
    21,908.80x = 32,880.78 × 11,381.92
  4. Step 4: Simplify right side
    21,908.80x = 374,246,407.50
  5. Step 5: Solve for x
    x = 374,246,407.50/21,908.80
  6. Step 6: Final answer
    x = 17,082.01

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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.