Home / 31,163.36-43,005.12-19,221.92

Finding the Fourth Proportional to 31,163.36, 43,005.12 and 19,221.92

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Solution

The fourth proportional to 31,163.36, 43,005.12 and 19,221.92 is: 26,526.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,163.36 : 43,005.12 = 19,221.92 : x
  2. Step 2: Convert to fraction form
    31,163.36/43,005.12 = 19,221.92/x
  3. Step 3: Cross multiply
    31,163.36x = 43,005.12 × 19,221.92
  4. Step 4: Simplify right side
    31,163.36x = 826,640,976.23
  5. Step 5: Solve for x
    x = 826,640,976.23/31,163.36
  6. Step 6: Final answer
    x = 26,526.05

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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.