Home / 12,214.75-18,322.13-2,980.75

Finding the Fourth Proportional to 12,214.75, 18,322.13 and 2,980.75

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Solution

The fourth proportional to 12,214.75, 18,322.13 and 2,980.75 is: 4,471.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,214.75 : 18,322.13 = 2,980.75 : x
  2. Step 2: Convert to fraction form
    12,214.75/18,322.13 = 2,980.75/x
  3. Step 3: Cross multiply
    12,214.75x = 18,322.13 × 2,980.75
  4. Step 4: Simplify right side
    12,214.75x = 54,613,689.00
  5. Step 5: Solve for x
    x = 54,613,689.00/12,214.75
  6. Step 6: Final answer
    x = 4,471.13

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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.