Home / 12,204.60-18,278.10-8,287.80

Finding the Fourth Proportional to 12,204.60, 18,278.10 and 8,287.80

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Solution

The fourth proportional to 12,204.60, 18,278.10 and 8,287.80 is: 12,412.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,204.60 : 18,278.10 = 8,287.80 : x
  2. Step 2: Convert to fraction form
    12,204.60/18,278.10 = 8,287.80/x
  3. Step 3: Cross multiply
    12,204.60x = 18,278.10 × 8,287.80
  4. Step 4: Simplify right side
    12,204.60x = 151,485,237.18
  5. Step 5: Solve for x
    x = 151,485,237.18/12,204.60
  6. Step 6: Final answer
    x = 12,412.14

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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.