Home / 21,806.90-32,661.41-18,959.12

Finding the Fourth Proportional to 21,806.90, 32,661.41 and 18,959.12

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Solution

The fourth proportional to 21,806.90, 32,661.41 and 18,959.12 is: 28,396.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,806.90 : 32,661.41 = 18,959.12 : x
  2. Step 2: Convert to fraction form
    21,806.90/32,661.41 = 18,959.12/x
  3. Step 3: Cross multiply
    21,806.90x = 32,661.41 × 18,959.12
  4. Step 4: Simplify right side
    21,806.90x = 619,231,333.46
  5. Step 5: Solve for x
    x = 619,231,333.46/21,806.90
  6. Step 6: Final answer
    x = 28,396.13

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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.