Home / 21,911.92-32,896.13-18,811.86

Finding the Fourth Proportional to 21,911.92, 32,896.13 and 18,811.86

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Solution

The fourth proportional to 21,911.92, 32,896.13 and 18,811.86 is: 28,242.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,911.92 : 32,896.13 = 18,811.86 : x
  2. Step 2: Convert to fraction form
    21,911.92/32,896.13 = 18,811.86/x
  3. Step 3: Cross multiply
    21,911.92x = 32,896.13 × 18,811.86
  4. Step 4: Simplify right side
    21,911.92x = 618,837,392.10
  5. Step 5: Solve for x
    x = 618,837,392.10/21,911.92
  6. Step 6: Final answer
    x = 28,242.04

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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.