Home / 20,749.56-28,634.48-11,318.32

Finding the Fourth Proportional to 20,749.56, 28,634.48 and 11,318.32

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Solution

The fourth proportional to 20,749.56, 28,634.48 and 11,318.32 is: 15,619.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,749.56 : 28,634.48 = 11,318.32 : x
  2. Step 2: Convert to fraction form
    20,749.56/28,634.48 = 11,318.32/x
  3. Step 3: Cross multiply
    20,749.56x = 28,634.48 × 11,318.32
  4. Step 4: Simplify right side
    20,749.56x = 324,094,207.67
  5. Step 5: Solve for x
    x = 324,094,207.67/20,749.56
  6. Step 6: Final answer
    x = 15,619.33

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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.