Home / 20,188.65-27,861.25-11,236.72

Finding the Fourth Proportional to 20,188.65, 27,861.25 and 11,236.72

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Solution

The fourth proportional to 20,188.65, 27,861.25 and 11,236.72 is: 15,507.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,188.65 : 27,861.25 = 11,236.72 : x
  2. Step 2: Convert to fraction form
    20,188.65/27,861.25 = 11,236.72/x
  3. Step 3: Cross multiply
    20,188.65x = 27,861.25 × 11,236.72
  4. Step 4: Simplify right side
    20,188.65x = 313,069,037.01
  5. Step 5: Solve for x
    x = 313,069,037.01/20,188.65
  6. Step 6: Final answer
    x = 15,507.18

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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.