Home / 10,990.80-16,474.12-5,435.92

Finding the Fourth Proportional to 10,990.80, 16,474.12 and 5,435.92

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Solution

The fourth proportional to 10,990.80, 16,474.12 and 5,435.92 is: 8,147.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,990.80 : 16,474.12 = 5,435.92 : x
  2. Step 2: Convert to fraction form
    10,990.80/16,474.12 = 5,435.92/x
  3. Step 3: Cross multiply
    10,990.80x = 16,474.12 × 5,435.92
  4. Step 4: Simplify right side
    10,990.80x = 89,551,998.39
  5. Step 5: Solve for x
    x = 89,551,998.39/10,990.80
  6. Step 6: Final answer
    x = 8,147.91

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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.