Home / 31,734.11-43,771.75-20,417.90

Finding the Fourth Proportional to 31,734.11, 43,771.75 and 20,417.90

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Solution

The fourth proportional to 31,734.11, 43,771.75 and 20,417.90 is: 28,162.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,734.11 : 43,771.75 = 20,417.90 : x
  2. Step 2: Convert to fraction form
    31,734.11/43,771.75 = 20,417.90/x
  3. Step 3: Cross multiply
    31,734.11x = 43,771.75 × 20,417.90
  4. Step 4: Simplify right side
    31,734.11x = 893,726,944.42
  5. Step 5: Solve for x
    x = 893,726,944.42/31,734.11
  6. Step 6: Final answer
    x = 28,162.97

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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.