Home / 10,881.30-16,321.80-3,090.12

Finding the Fourth Proportional to 10,881.30, 16,321.80 and 3,090.12

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Solution

The fourth proportional to 10,881.30, 16,321.80 and 3,090.12 is: 4,635.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,881.30 : 16,321.80 = 3,090.12 : x
  2. Step 2: Convert to fraction form
    10,881.30/16,321.80 = 3,090.12/x
  3. Step 3: Cross multiply
    10,881.30x = 16,321.80 × 3,090.12
  4. Step 4: Simplify right side
    10,881.30x = 50,436,320.62
  5. Step 5: Solve for x
    x = 50,436,320.62/10,881.30
  6. Step 6: Final answer
    x = 4,635.14

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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.