Home / 21,654.45-29,882.56-12,222.94

Finding the Fourth Proportional to 21,654.45, 29,882.56 and 12,222.94

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Solution

The fourth proportional to 21,654.45, 29,882.56 and 12,222.94 is: 16,867.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,654.45 : 29,882.56 = 12,222.94 : x
  2. Step 2: Convert to fraction form
    21,654.45/29,882.56 = 12,222.94/x
  3. Step 3: Cross multiply
    21,654.45x = 29,882.56 × 12,222.94
  4. Step 4: Simplify right side
    21,654.45x = 365,252,737.93
  5. Step 5: Solve for x
    x = 365,252,737.93/21,654.45
  6. Step 6: Final answer
    x = 16,867.33

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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.