Home / 18,896.22-28,311.56-11,485.12

Finding the Fourth Proportional to 18,896.22, 28,311.56 and 11,485.12

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Solution

The fourth proportional to 18,896.22, 28,311.56 and 11,485.12 is: 17,207.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,896.22 : 28,311.56 = 11,485.12 : x
  2. Step 2: Convert to fraction form
    18,896.22/28,311.56 = 11,485.12/x
  3. Step 3: Cross multiply
    18,896.22x = 28,311.56 × 11,485.12
  4. Step 4: Simplify right side
    18,896.22x = 325,161,663.99
  5. Step 5: Solve for x
    x = 325,161,663.99/18,896.22
  6. Step 6: Final answer
    x = 17,207.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.