Home / 11,990.10-17,990.34-6,436.96

Finding the Fourth Proportional to 11,990.10, 17,990.34 and 6,436.96

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Solution

The fourth proportional to 11,990.10, 17,990.34 and 6,436.96 is: 9,658.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,990.10 : 17,990.34 = 6,436.96 : x
  2. Step 2: Convert to fraction form
    11,990.10/17,990.34 = 6,436.96/x
  3. Step 3: Cross multiply
    11,990.10x = 17,990.34 × 6,436.96
  4. Step 4: Simplify right side
    11,990.10x = 115,803,098.97
  5. Step 5: Solve for x
    x = 115,803,098.97/11,990.10
  6. Step 6: Final answer
    x = 9,658.23

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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.