Home / 21,986.80-32,918.10-17,113.30

Finding the Fourth Proportional to 21,986.80, 32,918.10 and 17,113.30

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Solution

The fourth proportional to 21,986.80, 32,918.10 and 17,113.30 is: 25,621.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,986.80 : 32,918.10 = 17,113.30 : x
  2. Step 2: Convert to fraction form
    21,986.80/32,918.10 = 17,113.30/x
  3. Step 3: Cross multiply
    21,986.80x = 32,918.10 × 17,113.30
  4. Step 4: Simplify right side
    21,986.80x = 563,337,320.73
  5. Step 5: Solve for x
    x = 563,337,320.73/21,986.80
  6. Step 6: Final answer
    x = 25,621.61

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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.