Home / 31,399.36-43,316.31-20,062.96

Finding the Fourth Proportional to 31,399.36, 43,316.31 and 20,062.96

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Solution

The fourth proportional to 31,399.36, 43,316.31 and 20,062.96 is: 27,677.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,399.36 : 43,316.31 = 20,062.96 : x
  2. Step 2: Convert to fraction form
    31,399.36/43,316.31 = 20,062.96/x
  3. Step 3: Cross multiply
    31,399.36x = 43,316.31 × 20,062.96
  4. Step 4: Simplify right side
    31,399.36x = 869,053,394.88
  5. Step 5: Solve for x
    x = 869,053,394.88/31,399.36
  6. Step 6: Final answer
    x = 27,677.42

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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.