Home / 31,388.92-43,310.80-19,455.19

Finding the Fourth Proportional to 31,388.92, 43,310.80 and 19,455.19

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Solution

The fourth proportional to 31,388.92, 43,310.80 and 19,455.19 is: 26,844.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,388.92 : 43,310.80 = 19,455.19 : x
  2. Step 2: Convert to fraction form
    31,388.92/43,310.80 = 19,455.19/x
  3. Step 3: Cross multiply
    31,388.92x = 43,310.80 × 19,455.19
  4. Step 4: Simplify right side
    31,388.92x = 842,619,759.09
  5. Step 5: Solve for x
    x = 842,619,759.09/31,388.92
  6. Step 6: Final answer
    x = 26,844.50

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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.