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Finding the Fourth Proportional to 30,813.44, 42,517.71 and 17,384.44

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Solution

The fourth proportional to 30,813.44, 42,517.71 and 17,384.44 is: 23,987.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,813.44 : 42,517.71 = 17,384.44 : x
  2. Step 2: Convert to fraction form
    30,813.44/42,517.71 = 17,384.44/x
  3. Step 3: Cross multiply
    30,813.44x = 42,517.71 × 17,384.44
  4. Step 4: Simplify right side
    30,813.44x = 739,146,578.43
  5. Step 5: Solve for x
    x = 739,146,578.43/30,813.44
  6. Step 6: Final answer
    x = 23,987.80

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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.