Home / 20,737.92-31,090.88-6,879.36

Finding the Fourth Proportional to 20,737.92, 31,090.88 and 6,879.36

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Solution

The fourth proportional to 20,737.92, 31,090.88 and 6,879.36 is: 10,313.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,737.92 : 31,090.88 = 6,879.36 : x
  2. Step 2: Convert to fraction form
    20,737.92/31,090.88 = 6,879.36/x
  3. Step 3: Cross multiply
    20,737.92x = 31,090.88 × 6,879.36
  4. Step 4: Simplify right side
    20,737.92x = 213,885,356.24
  5. Step 5: Solve for x
    x = 213,885,356.24/20,737.92
  6. Step 6: Final answer
    x = 10,313.73

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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.