Home / 11,989.76-17,989.82-6,436.62

Finding the Fourth Proportional to 11,989.76, 17,989.82 and 6,436.62

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Solution

The fourth proportional to 11,989.76, 17,989.82 and 6,436.62 is: 9,657.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,989.76 : 17,989.82 = 6,436.62 : x
  2. Step 2: Convert to fraction form
    11,989.76/17,989.82 = 6,436.62/x
  3. Step 3: Cross multiply
    11,989.76x = 17,989.82 × 6,436.62
  4. Step 4: Simplify right side
    11,989.76x = 115,793,651.30
  5. Step 5: Solve for x
    x = 115,793,651.30/11,989.76
  6. Step 6: Final answer
    x = 9,657.72

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1.5x scale

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.