Home / 22,789.36-31,455.92-13,231.39

Finding the Fourth Proportional to 22,789.36, 31,455.92 and 13,231.39

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Solution

The fourth proportional to 22,789.36, 31,455.92 and 13,231.39 is: 18,263.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,789.36 : 31,455.92 = 13,231.39 : x
  2. Step 2: Convert to fraction form
    22,789.36/31,455.92 = 13,231.39/x
  3. Step 3: Cross multiply
    22,789.36x = 31,455.92 × 13,231.39
  4. Step 4: Simplify right side
    22,789.36x = 416,205,479.17
  5. Step 5: Solve for x
    x = 416,205,479.17/22,789.36
  6. Step 6: Final answer
    x = 18,263.15

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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.