Home / 12,221.42-18,331.53-6,685.58

Finding the Fourth Proportional to 12,221.42, 18,331.53 and 6,685.58

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Solution

The fourth proportional to 12,221.42, 18,331.53 and 6,685.58 is: 10,028.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,221.42 : 18,331.53 = 6,685.58 : x
  2. Step 2: Convert to fraction form
    12,221.42/18,331.53 = 6,685.58/x
  3. Step 3: Cross multiply
    12,221.42x = 18,331.53 × 6,685.58
  4. Step 4: Simplify right side
    12,221.42x = 122,556,862.35
  5. Step 5: Solve for x
    x = 122,556,862.35/12,221.42
  6. Step 6: Final answer
    x = 10,028.04

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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.