Home / 20,939.14-31,401.95-6,895.83

Finding the Fourth Proportional to 20,939.14, 31,401.95 and 6,895.83

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Solution

The fourth proportional to 20,939.14, 31,401.95 and 6,895.83 is: 10,341.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,939.14 : 31,401.95 = 6,895.83 : x
  2. Step 2: Convert to fraction form
    20,939.14/31,401.95 = 6,895.83/x
  3. Step 3: Cross multiply
    20,939.14x = 31,401.95 × 6,895.83
  4. Step 4: Simplify right side
    20,939.14x = 216,542,508.87
  5. Step 5: Solve for x
    x = 216,542,508.87/20,939.14
  6. Step 6: Final answer
    x = 10,341.52

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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.