Home / 20,118.67-27,765.09-11,621.15

Finding the Fourth Proportional to 20,118.67, 27,765.09 and 11,621.15

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Solution

The fourth proportional to 20,118.67, 27,765.09 and 11,621.15 is: 16,037.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,118.67 : 27,765.09 = 11,621.15 : x
  2. Step 2: Convert to fraction form
    20,118.67/27,765.09 = 11,621.15/x
  3. Step 3: Cross multiply
    20,118.67x = 27,765.09 × 11,621.15
  4. Step 4: Simplify right side
    20,118.67x = 322,662,391.67
  5. Step 5: Solve for x
    x = 322,662,391.67/20,118.67
  6. Step 6: Final answer
    x = 16,037.96

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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.