Home / 20,934.21-31,401.27-5,351.79

Finding the Fourth Proportional to 20,934.21, 31,401.27 and 5,351.79

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Solution

The fourth proportional to 20,934.21, 31,401.27 and 5,351.79 is: 8,027.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,934.21 : 31,401.27 = 5,351.79 : x
  2. Step 2: Convert to fraction form
    20,934.21/31,401.27 = 5,351.79/x
  3. Step 3: Cross multiply
    20,934.21x = 31,401.27 × 5,351.79
  4. Step 4: Simplify right side
    20,934.21x = 168,053,002.77
  5. Step 5: Solve for x
    x = 168,053,002.77/20,934.21
  6. Step 6: Final answer
    x = 8,027.67

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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.