Home / 12,213.18-18,319.56-3,893.08

Finding the Fourth Proportional to 12,213.18, 18,319.56 and 3,893.08

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Solution

The fourth proportional to 12,213.18, 18,319.56 and 3,893.08 is: 5,839.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,213.18 : 18,319.56 = 3,893.08 : x
  2. Step 2: Convert to fraction form
    12,213.18/18,319.56 = 3,893.08/x
  3. Step 3: Cross multiply
    12,213.18x = 18,319.56 × 3,893.08
  4. Step 4: Simplify right side
    12,213.18x = 71,319,512.64
  5. Step 5: Solve for x
    x = 71,319,512.64/12,213.18
  6. Step 6: Final answer
    x = 5,839.55

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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.