Home / 10,981.20-16,467-3,189.84

Finding the Fourth Proportional to 10,981.20, 16,467 and 3,189.84

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Solution

The fourth proportional to 10,981.20, 16,467 and 3,189.84 is: 4,783.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,981.20 : 16,467 = 3,189.84 : x
  2. Step 2: Convert to fraction form
    10,981.20/16,467 = 3,189.84/x
  3. Step 3: Cross multiply
    10,981.20x = 16,467 × 3,189.84
  4. Step 4: Simplify right side
    10,981.20x = 52,527,095.28
  5. Step 5: Solve for x
    x = 52,527,095.28/10,981.20
  6. Step 6: Final answer
    x = 4,783.37

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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.