Home / 20,960.46-31,430.97-12,197.88

Finding the Fourth Proportional to 20,960.46, 31,430.97 and 12,197.88

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Solution

The fourth proportional to 20,960.46, 31,430.97 and 12,197.88 is: 18,291.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,960.46 : 31,430.97 = 12,197.88 : x
  2. Step 2: Convert to fraction form
    20,960.46/31,430.97 = 12,197.88/x
  3. Step 3: Cross multiply
    20,960.46x = 31,430.97 × 12,197.88
  4. Step 4: Simplify right side
    20,960.46x = 383,391,200.34
  5. Step 5: Solve for x
    x = 383,391,200.34/20,960.46
  6. Step 6: Final answer
    x = 18,291.16

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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.