Home / 31,719.44-43,753.03-20,403.69

Finding the Fourth Proportional to 31,719.44, 43,753.03 and 20,403.69

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Solution

The fourth proportional to 31,719.44, 43,753.03 and 20,403.69 is: 28,144.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,719.44 : 43,753.03 = 20,403.69 : x
  2. Step 2: Convert to fraction form
    31,719.44/43,753.03 = 20,403.69/x
  3. Step 3: Cross multiply
    31,719.44x = 43,753.03 × 20,403.69
  4. Step 4: Simplify right side
    31,719.44x = 892,723,045.60
  5. Step 5: Solve for x
    x = 892,723,045.60/31,719.44
  6. Step 6: Final answer
    x = 28,144.35

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1.5x scale

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.