Home / 12,218.12-18,325.54-3,453.72

Finding the Fourth Proportional to 12,218.12, 18,325.54 and 3,453.72

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Solution

The fourth proportional to 12,218.12, 18,325.54 and 3,453.72 is: 5,180.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,218.12 : 18,325.54 = 3,453.72 : x
  2. Step 2: Convert to fraction form
    12,218.12/18,325.54 = 3,453.72/x
  3. Step 3: Cross multiply
    12,218.12x = 18,325.54 × 3,453.72
  4. Step 4: Simplify right side
    12,218.12x = 63,291,284.01
  5. Step 5: Solve for x
    x = 63,291,284.01/12,218.12
  6. Step 6: Final answer
    x = 5,180.12

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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.