Home / 20,833.92-31,297.92-12,090.24

Finding the Fourth Proportional to 20,833.92, 31,297.92 and 12,090.24

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Solution

The fourth proportional to 20,833.92, 31,297.92 and 12,090.24 is: 18,162.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,833.92 : 31,297.92 = 12,090.24 : x
  2. Step 2: Convert to fraction form
    20,833.92/31,297.92 = 12,090.24/x
  3. Step 3: Cross multiply
    20,833.92x = 31,297.92 × 12,090.24
  4. Step 4: Simplify right side
    20,833.92x = 378,399,364.30
  5. Step 5: Solve for x
    x = 378,399,364.30/20,833.92
  6. Step 6: Final answer
    x = 18,162.66

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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.