Home / 16,305.74-22,520.40-10,991.42

Finding the Fourth Proportional to 16,305.74, 22,520.40 and 10,991.42

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Solution

The fourth proportional to 16,305.74, 22,520.40 and 10,991.42 is: 15,180.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,305.74 : 22,520.40 = 10,991.42 : x
  2. Step 2: Convert to fraction form
    16,305.74/22,520.40 = 10,991.42/x
  3. Step 3: Cross multiply
    16,305.74x = 22,520.40 × 10,991.42
  4. Step 4: Simplify right side
    16,305.74x = 247,531,174.97
  5. Step 5: Solve for x
    x = 247,531,174.97/16,305.74
  6. Step 6: Final answer
    x = 15,180.62

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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.