Home / 12,220.38-18,331.44-5,985.60

Finding the Fourth Proportional to 12,220.38, 18,331.44 and 5,985.60

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Solution

The fourth proportional to 12,220.38, 18,331.44 and 5,985.60 is: 8,978.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,220.38 : 18,331.44 = 5,985.60 : x
  2. Step 2: Convert to fraction form
    12,220.38/18,331.44 = 5,985.60/x
  3. Step 3: Cross multiply
    12,220.38x = 18,331.44 × 5,985.60
  4. Step 4: Simplify right side
    12,220.38x = 109,724,667.26
  5. Step 5: Solve for x
    x = 109,724,667.26/12,220.38
  6. Step 6: Final answer
    x = 8,978.83

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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.