Home / 31,286.85-43,189.83-19,971.33

Finding the Fourth Proportional to 31,286.85, 43,189.83 and 19,971.33

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Solution

The fourth proportional to 31,286.85, 43,189.83 and 19,971.33 is: 27,569.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,286.85 : 43,189.83 = 19,971.33 : x
  2. Step 2: Convert to fraction form
    31,286.85/43,189.83 = 19,971.33/x
  3. Step 3: Cross multiply
    31,286.85x = 43,189.83 × 19,971.33
  4. Step 4: Simplify right side
    31,286.85x = 862,558,347.57
  5. Step 5: Solve for x
    x = 862,558,347.57/31,286.85
  6. Step 6: Final answer
    x = 27,569.36

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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.