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Finding the Fourth Proportional to 30,281.49, 41,789.39 and 16,853.49

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Solution

The fourth proportional to 30,281.49, 41,789.39 and 16,853.49 is: 23,258.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,281.49 : 41,789.39 = 16,853.49 : x
  2. Step 2: Convert to fraction form
    30,281.49/41,789.39 = 16,853.49/x
  3. Step 3: Cross multiply
    30,281.49x = 41,789.39 × 16,853.49
  4. Step 4: Simplify right side
    30,281.49x = 704,297,066.47
  5. Step 5: Solve for x
    x = 704,297,066.47/30,281.49
  6. Step 6: Final answer
    x = 23,258.34

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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.