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Finding the Fourth Proportional to 21,902.52, 30,225.46 and 11,966.52

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Solution

The fourth proportional to 21,902.52, 30,225.46 and 11,966.52 is: 16,513.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,902.52 : 30,225.46 = 11,966.52 : x
  2. Step 2: Convert to fraction form
    21,902.52/30,225.46 = 11,966.52/x
  3. Step 3: Cross multiply
    21,902.52x = 30,225.46 × 11,966.52
  4. Step 4: Simplify right side
    21,902.52x = 361,693,571.60
  5. Step 5: Solve for x
    x = 361,693,571.60/21,902.52
  6. Step 6: Final answer
    x = 16,513.79

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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.