Home / 20,749.56-28,634.34-11,318.12

Finding the Fourth Proportional to 20,749.56, 28,634.34 and 11,318.12

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Solution

The fourth proportional to 20,749.56, 28,634.34 and 11,318.12 is: 15,618.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,749.56 : 28,634.34 = 11,318.12 : x
  2. Step 2: Convert to fraction form
    20,749.56/28,634.34 = 11,318.12/x
  3. Step 3: Cross multiply
    20,749.56x = 28,634.34 × 11,318.12
  4. Step 4: Simplify right side
    20,749.56x = 324,086,896.24
  5. Step 5: Solve for x
    x = 324,086,896.24/20,749.56
  6. Step 6: Final answer
    x = 15,618.98

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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.