Home / 31,621.26-43,646.43-20,873.97

Finding the Fourth Proportional to 31,621.26, 43,646.43 and 20,873.97

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Solution

The fourth proportional to 31,621.26, 43,646.43 and 20,873.97 is: 28,812.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,621.26 : 43,646.43 = 20,873.97 : x
  2. Step 2: Convert to fraction form
    31,621.26/43,646.43 = 20,873.97/x
  3. Step 3: Cross multiply
    31,621.26x = 43,646.43 × 20,873.97
  4. Step 4: Simplify right side
    31,621.26x = 911,074,270.43
  5. Step 5: Solve for x
    x = 911,074,270.43/31,621.26
  6. Step 6: Final answer
    x = 28,812.08

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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.