Home / 10,990.08-16,486.49-3,969.20

Finding the Fourth Proportional to 10,990.08, 16,486.49 and 3,969.20

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Solution

The fourth proportional to 10,990.08, 16,486.49 and 3,969.20 is: 5,954.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,990.08 : 16,486.49 = 3,969.20 : x
  2. Step 2: Convert to fraction form
    10,990.08/16,486.49 = 3,969.20/x
  3. Step 3: Cross multiply
    10,990.08x = 16,486.49 × 3,969.20
  4. Step 4: Simplify right side
    10,990.08x = 65,438,204.92
  5. Step 5: Solve for x
    x = 65,438,204.92/10,990.08
  6. Step 6: Final answer
    x = 5,954.30

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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.