Home / 21,333.88-29,441.10-11,902.60

Finding the Fourth Proportional to 21,333.88, 29,441.10 and 11,902.60

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Solution

The fourth proportional to 21,333.88, 29,441.10 and 11,902.60 is: 16,425.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,333.88 : 29,441.10 = 11,902.60 : x
  2. Step 2: Convert to fraction form
    21,333.88/29,441.10 = 11,902.60/x
  3. Step 3: Cross multiply
    21,333.88x = 29,441.10 × 11,902.60
  4. Step 4: Simplify right side
    21,333.88x = 350,425,636.86
  5. Step 5: Solve for x
    x = 350,425,636.86/21,333.88
  6. Step 6: Final answer
    x = 16,425.78

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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.