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Finding the Fourth Proportional to 30,990.47, 42,767.33 and 16,843.34

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Solution

The fourth proportional to 30,990.47, 42,767.33 and 16,843.34 is: 23,244.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,990.47 : 42,767.33 = 16,843.34 : x
  2. Step 2: Convert to fraction form
    30,990.47/42,767.33 = 16,843.34/x
  3. Step 3: Cross multiply
    30,990.47x = 42,767.33 × 16,843.34
  4. Step 4: Simplify right side
    30,990.47x = 720,344,702.78
  5. Step 5: Solve for x
    x = 720,344,702.78/30,990.47
  6. Step 6: Final answer
    x = 23,244.08

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.