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Finding the Fourth Proportional to 28,212.66, 38,942.04 and 16,283.78

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Solution

The fourth proportional to 28,212.66, 38,942.04 and 16,283.78 is: 22,476.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,212.66 : 38,942.04 = 16,283.78 : x
  2. Step 2: Convert to fraction form
    28,212.66/38,942.04 = 16,283.78/x
  3. Step 3: Cross multiply
    28,212.66x = 38,942.04 × 16,283.78
  4. Step 4: Simplify right side
    28,212.66x = 634,123,612.11
  5. Step 5: Solve for x
    x = 634,123,612.11/28,212.66
  6. Step 6: Final answer
    x = 22,476.56

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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.