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Finding the Fourth Proportional to 30,991.52, 42,767.98 and 16,844.27

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Solution

The fourth proportional to 30,991.52, 42,767.98 and 16,844.27 is: 23,244.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,991.52 : 42,767.98 = 16,844.27 : x
  2. Step 2: Convert to fraction form
    30,991.52/42,767.98 = 16,844.27/x
  3. Step 3: Cross multiply
    30,991.52x = 42,767.98 × 16,844.27
  4. Step 4: Simplify right side
    30,991.52x = 720,395,188.63
  5. Step 5: Solve for x
    x = 720,395,188.63/30,991.52
  6. Step 6: Final answer
    x = 23,244.91

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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.