Home / 21,965.20-32,965.22-11,438.21

Finding the Fourth Proportional to 21,965.20, 32,965.22 and 11,438.21

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Solution

The fourth proportional to 21,965.20, 32,965.22 and 11,438.21 is: 17,166.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,965.20 : 32,965.22 = 11,438.21 : x
  2. Step 2: Convert to fraction form
    21,965.20/32,965.22 = 11,438.21/x
  3. Step 3: Cross multiply
    21,965.20x = 32,965.22 × 11,438.21
  4. Step 4: Simplify right side
    21,965.20x = 377,063,220.06
  5. Step 5: Solve for x
    x = 377,063,220.06/21,965.20
  6. Step 6: Final answer
    x = 17,166.39

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1.5x scale

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.