Home / 20,189.31-27,861.22-11,236.60

Finding the Fourth Proportional to 20,189.31, 27,861.22 and 11,236.60

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Solution

The fourth proportional to 20,189.31, 27,861.22 and 11,236.60 is: 15,506.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,189.31 : 27,861.22 = 11,236.60 : x
  2. Step 2: Convert to fraction form
    20,189.31/27,861.22 = 11,236.60/x
  3. Step 3: Cross multiply
    20,189.31x = 27,861.22 × 11,236.60
  4. Step 4: Simplify right side
    20,189.31x = 313,065,384.65
  5. Step 5: Solve for x
    x = 313,065,384.65/20,189.31
  6. Step 6: Final answer
    x = 15,506.49

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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.