Home / 11,811.88-17,742.42-9,966.61

Finding the Fourth Proportional to 11,811.88, 17,742.42 and 9,966.61

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Solution

The fourth proportional to 11,811.88, 17,742.42 and 9,966.61 is: 14,970.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,811.88 : 17,742.42 = 9,966.61 : x
  2. Step 2: Convert to fraction form
    11,811.88/17,742.42 = 9,966.61/x
  3. Step 3: Cross multiply
    11,811.88x = 17,742.42 × 9,966.61
  4. Step 4: Simplify right side
    11,811.88x = 176,831,780.60
  5. Step 5: Solve for x
    x = 176,831,780.60/11,811.88
  6. Step 6: Final answer
    x = 14,970.67

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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.