Home / 21,908.48-32,890.97-18,808.41

Finding the Fourth Proportional to 21,908.48, 32,890.97 and 18,808.41

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Solution

The fourth proportional to 21,908.48, 32,890.97 and 18,808.41 is: 28,236.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,908.48 : 32,890.97 = 18,808.41 : x
  2. Step 2: Convert to fraction form
    21,908.48/32,890.97 = 18,808.41/x
  3. Step 3: Cross multiply
    21,908.48x = 32,890.97 × 18,808.41
  4. Step 4: Simplify right side
    21,908.48x = 618,626,896.08
  5. Step 5: Solve for x
    x = 618,626,896.08/21,908.48
  6. Step 6: Final answer
    x = 28,236.87

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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.