Home / 12,212.78-18,319.16-5,635.37

Finding the Fourth Proportional to 12,212.78, 18,319.16 and 5,635.37

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Solution

The fourth proportional to 12,212.78, 18,319.16 and 5,635.37 is: 8,453.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,212.78 : 18,319.16 = 5,635.37 : x
  2. Step 2: Convert to fraction form
    12,212.78/18,319.16 = 5,635.37/x
  3. Step 3: Cross multiply
    12,212.78x = 18,319.16 × 5,635.37
  4. Step 4: Simplify right side
    12,212.78x = 103,235,304.58
  5. Step 5: Solve for x
    x = 103,235,304.58/12,212.78
  6. Step 6: Final answer
    x = 8,453.06

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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.