Home / 31,568.10-43,578.32-20,241.87

Finding the Fourth Proportional to 31,568.10, 43,578.32 and 20,241.87

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Solution

The fourth proportional to 31,568.10, 43,578.32 and 20,241.87 is: 27,942.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,568.10 : 43,578.32 = 20,241.87 : x
  2. Step 2: Convert to fraction form
    31,568.10/43,578.32 = 20,241.87/x
  3. Step 3: Cross multiply
    31,568.10x = 43,578.32 × 20,241.87
  4. Step 4: Simplify right side
    31,568.10x = 882,106,587.05
  5. Step 5: Solve for x
    x = 882,106,587.05/31,568.10
  6. Step 6: Final answer
    x = 27,942.97

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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.