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Finding the Fourth Proportional to 22,357.61, 30,854.28 and 12,286.97

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Solution

The fourth proportional to 22,357.61, 30,854.28 and 12,286.97 is: 16,956.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,357.61 : 30,854.28 = 12,286.97 : x
  2. Step 2: Convert to fraction form
    22,357.61/30,854.28 = 12,286.97/x
  3. Step 3: Cross multiply
    22,357.61x = 30,854.28 × 12,286.97
  4. Step 4: Simplify right side
    22,357.61x = 379,105,612.73
  5. Step 5: Solve for x
    x = 379,105,612.73/22,357.61
  6. Step 6: Final answer
    x = 16,956.45

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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.