Home / 31,338.68-43,231.26-20,582.00

Finding the Fourth Proportional to 31,338.68, 43,231.26 and 20,582.00

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Solution

The fourth proportional to 31,338.68, 43,231.26 and 20,582.00 is: 28,392.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,338.68 : 43,231.26 = 20,582.00 : x
  2. Step 2: Convert to fraction form
    31,338.68/43,231.26 = 20,582.00/x
  3. Step 3: Cross multiply
    31,338.68x = 43,231.26 × 20,582.00
  4. Step 4: Simplify right side
    31,338.68x = 889,785,577.16
  5. Step 5: Solve for x
    x = 889,785,577.16/31,338.68
  6. Step 6: Final answer
    x = 28,392.57

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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.