Home / 20,749.42-28,634.16-11,317.96

Finding the Fourth Proportional to 20,749.42, 28,634.16 and 11,317.96

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Solution

The fourth proportional to 20,749.42, 28,634.16 and 11,317.96 is: 15,618.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,749.42 : 28,634.16 = 11,317.96 : x
  2. Step 2: Convert to fraction form
    20,749.42/28,634.16 = 11,317.96/x
  3. Step 3: Cross multiply
    20,749.42x = 28,634.16 × 11,317.96
  4. Step 4: Simplify right side
    20,749.42x = 324,080,277.51
  5. Step 5: Solve for x
    x = 324,080,277.51/20,749.42
  6. Step 6: Final answer
    x = 15,618.76

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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.