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Finding the Fourth Proportional to 28,245.84, 38,974.08 and 16,304.80

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Solution

The fourth proportional to 28,245.84, 38,974.08 and 16,304.80 is: 22,497.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,245.84 : 38,974.08 = 16,304.80 : x
  2. Step 2: Convert to fraction form
    28,245.84/38,974.08 = 16,304.80/x
  3. Step 3: Cross multiply
    28,245.84x = 38,974.08 × 16,304.80
  4. Step 4: Simplify right side
    28,245.84x = 635,464,579.58
  5. Step 5: Solve for x
    x = 635,464,579.58/28,245.84
  6. Step 6: Final answer
    x = 22,497.63

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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.