Home / 12,214.11-18,321.21-2,980.11

Finding the Fourth Proportional to 12,214.11, 18,321.21 and 2,980.11

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Solution

The fourth proportional to 12,214.11, 18,321.21 and 2,980.11 is: 4,470.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,214.11 : 18,321.21 = 2,980.11 : x
  2. Step 2: Convert to fraction form
    12,214.11/18,321.21 = 2,980.11/x
  3. Step 3: Cross multiply
    12,214.11x = 18,321.21 × 2,980.11
  4. Step 4: Simplify right side
    12,214.11x = 54,599,221.13
  5. Step 5: Solve for x
    x = 54,599,221.13/12,214.11
  6. Step 6: Final answer
    x = 4,470.18

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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.