Home / 11,811.20-17,731.20-5,964.80

Finding the Fourth Proportional to 11,811.20, 17,731.20 and 5,964.80

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Solution

The fourth proportional to 11,811.20, 17,731.20 and 5,964.80 is: 8,954.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,811.20 : 17,731.20 = 5,964.80 : x
  2. Step 2: Convert to fraction form
    11,811.20/17,731.20 = 5,964.80/x
  3. Step 3: Cross multiply
    11,811.20x = 17,731.20 × 5,964.80
  4. Step 4: Simplify right side
    11,811.20x = 105,763,061.76
  5. Step 5: Solve for x
    x = 105,763,061.76/11,811.20
  6. Step 6: Final answer
    x = 8,954.47

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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.