Home / 30,991.06-42,767.72-16,843.87

Finding the Fourth Proportional to 30,991.06, 42,767.72 and 16,843.87

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Solution

The fourth proportional to 30,991.06, 42,767.72 and 16,843.87 is: 23,244.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,991.06 : 42,767.72 = 16,843.87 : x
  2. Step 2: Convert to fraction form
    30,991.06/42,767.72 = 16,843.87/x
  3. Step 3: Cross multiply
    30,991.06x = 42,767.72 × 16,843.87
  4. Step 4: Simplify right side
    30,991.06x = 720,373,787.90
  5. Step 5: Solve for x
    x = 720,373,787.90/30,991.06
  6. Step 6: Final answer
    x = 23,244.57

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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.