Home / 20,200.34-30,313.13-7,721.42

Finding the Fourth Proportional to 20,200.34, 30,313.13 and 7,721.42

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Solution

The fourth proportional to 20,200.34, 30,313.13 and 7,721.42 is: 11,586.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,200.34 : 30,313.13 = 7,721.42 : x
  2. Step 2: Convert to fraction form
    20,200.34/30,313.13 = 7,721.42/x
  3. Step 3: Cross multiply
    20,200.34x = 30,313.13 × 7,721.42
  4. Step 4: Simplify right side
    20,200.34x = 234,060,408.24
  5. Step 5: Solve for x
    x = 234,060,408.24/20,200.34
  6. Step 6: Final answer
    x = 11,586.95

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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.