Home / 21,354.22-29,468.84-11,922.78

Finding the Fourth Proportional to 21,354.22, 29,468.84 and 11,922.78

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Solution

The fourth proportional to 21,354.22, 29,468.84 and 11,922.78 is: 16,453.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,354.22 : 29,468.84 = 11,922.78 : x
  2. Step 2: Convert to fraction form
    21,354.22/29,468.84 = 11,922.78/x
  3. Step 3: Cross multiply
    21,354.22x = 29,468.84 × 11,922.78
  4. Step 4: Simplify right side
    21,354.22x = 351,350,496.18
  5. Step 5: Solve for x
    x = 351,350,496.18/21,354.22
  6. Step 6: Final answer
    x = 16,453.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.