Home / 12,221.67-18,331.90-6,685.83

Finding the Fourth Proportional to 12,221.67, 18,331.90 and 6,685.83

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Solution

The fourth proportional to 12,221.67, 18,331.90 and 6,685.83 is: 10,028.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,221.67 : 18,331.90 = 6,685.83 : x
  2. Step 2: Convert to fraction form
    12,221.67/18,331.90 = 6,685.83/x
  3. Step 3: Cross multiply
    12,221.67x = 18,331.90 × 6,685.83
  4. Step 4: Simplify right side
    12,221.67x = 122,563,966.98
  5. Step 5: Solve for x
    x = 122,563,966.98/12,221.67
  6. Step 6: Final answer
    x = 10,028.41

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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.