Home / 20,189.16-27,861.84-11,236.32

Finding the Fourth Proportional to 20,189.16, 27,861.84 and 11,236.32

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Solution

The fourth proportional to 20,189.16, 27,861.84 and 11,236.32 is: 15,506.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,189.16 : 27,861.84 = 11,236.32 : x
  2. Step 2: Convert to fraction form
    20,189.16/27,861.84 = 11,236.32/x
  3. Step 3: Cross multiply
    20,189.16x = 27,861.84 × 11,236.32
  4. Step 4: Simplify right side
    20,189.16x = 313,064,550.03
  5. Step 5: Solve for x
    x = 313,064,550.03/20,189.16
  6. Step 6: Final answer
    x = 15,506.57

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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.