Home / 31,196.97-43,023.80-20,597.31

Finding the Fourth Proportional to 31,196.97, 43,023.80 and 20,597.31

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Solution

The fourth proportional to 31,196.97, 43,023.80 and 20,597.31 is: 28,405.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,196.97 : 43,023.80 = 20,597.31 : x
  2. Step 2: Convert to fraction form
    31,196.97/43,023.80 = 20,597.31/x
  3. Step 3: Cross multiply
    31,196.97x = 43,023.80 × 20,597.31
  4. Step 4: Simplify right side
    31,196.97x = 886,174,442.99
  5. Step 5: Solve for x
    x = 886,174,442.99/31,196.97
  6. Step 6: Final answer
    x = 28,405.79

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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.