Home / 20,749.68-28,633.56-11,317.68

Finding the Fourth Proportional to 20,749.68, 28,633.56 and 11,317.68

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Solution

The fourth proportional to 20,749.68, 28,633.56 and 11,317.68 is: 15,617.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,749.68 : 28,633.56 = 11,317.68 : x
  2. Step 2: Convert to fraction form
    20,749.68/28,633.56 = 11,317.68/x
  3. Step 3: Cross multiply
    20,749.68x = 28,633.56 × 11,317.68
  4. Step 4: Simplify right side
    20,749.68x = 324,065,469.34
  5. Step 5: Solve for x
    x = 324,065,469.34/20,749.68
  6. Step 6: Final answer
    x = 15,617.85

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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.