Home / 28,134.96-38,742.66-20,163.48

Finding the Fourth Proportional to 28,134.96, 38,742.66 and 20,163.48

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Solution

The fourth proportional to 28,134.96, 38,742.66 and 20,163.48 is: 27,765.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,134.96 : 38,742.66 = 20,163.48 : x
  2. Step 2: Convert to fraction form
    28,134.96/38,742.66 = 20,163.48/x
  3. Step 3: Cross multiply
    28,134.96x = 38,742.66 × 20,163.48
  4. Step 4: Simplify right side
    28,134.96x = 781,186,850.06
  5. Step 5: Solve for x
    x = 781,186,850.06/28,134.96
  6. Step 6: Final answer
    x = 27,765.70

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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.