Home / 20,935.62-31,408.38-6,895.86

Finding the Fourth Proportional to 20,935.62, 31,408.38 and 6,895.86

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Solution

The fourth proportional to 20,935.62, 31,408.38 and 6,895.86 is: 10,345.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,935.62 : 31,408.38 = 6,895.86 : x
  2. Step 2: Convert to fraction form
    20,935.62/31,408.38 = 6,895.86/x
  3. Step 3: Cross multiply
    20,935.62x = 31,408.38 × 6,895.86
  4. Step 4: Simplify right side
    20,935.62x = 216,587,791.31
  5. Step 5: Solve for x
    x = 216,587,791.31/20,935.62
  6. Step 6: Final answer
    x = 10,345.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.