Home / 31,277.13-43,162.43-20,099.13

Finding the Fourth Proportional to 31,277.13, 43,162.43 and 20,099.13

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Solution

The fourth proportional to 31,277.13, 43,162.43 and 20,099.13 is: 27,736.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,277.13 : 43,162.43 = 20,099.13 : x
  2. Step 2: Convert to fraction form
    31,277.13/43,162.43 = 20,099.13/x
  3. Step 3: Cross multiply
    31,277.13x = 43,162.43 × 20,099.13
  4. Step 4: Simplify right side
    31,277.13x = 867,527,291.69
  5. Step 5: Solve for x
    x = 867,527,291.69/31,277.13
  6. Step 6: Final answer
    x = 27,736.79

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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.