Home / 31,837.25-43,923.16-20,505.86

Finding the Fourth Proportional to 31,837.25, 43,923.16 and 20,505.86

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Solution

The fourth proportional to 31,837.25, 43,923.16 and 20,505.86 is: 28,290.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,837.25 : 43,923.16 = 20,505.86 : x
  2. Step 2: Convert to fraction form
    31,837.25/43,923.16 = 20,505.86/x
  3. Step 3: Cross multiply
    31,837.25x = 43,923.16 × 20,505.86
  4. Step 4: Simplify right side
    31,837.25x = 900,682,140.45
  5. Step 5: Solve for x
    x = 900,682,140.45/31,837.25
  6. Step 6: Final answer
    x = 28,290.20

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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.