Home / 12,218.50-18,327.75-2,984.50

Finding the Fourth Proportional to 12,218.50, 18,327.75 and 2,984.50

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Solution

The fourth proportional to 12,218.50, 18,327.75 and 2,984.50 is: 4,476.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,218.50 : 18,327.75 = 2,984.50 : x
  2. Step 2: Convert to fraction form
    12,218.50/18,327.75 = 2,984.50/x
  3. Step 3: Cross multiply
    12,218.50x = 18,327.75 × 2,984.50
  4. Step 4: Simplify right side
    12,218.50x = 54,699,169.88
  5. Step 5: Solve for x
    x = 54,699,169.88/12,218.50
  6. Step 6: Final answer
    x = 4,476.75

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Double scale
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Similar ratio
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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.