Home / 12,218.40-18,327.60-7,293.60

Finding the Fourth Proportional to 12,218.40, 18,327.60 and 7,293.60

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Solution

The fourth proportional to 12,218.40, 18,327.60 and 7,293.60 is: 10,940.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,218.40 : 18,327.60 = 7,293.60 : x
  2. Step 2: Convert to fraction form
    12,218.40/18,327.60 = 7,293.60/x
  3. Step 3: Cross multiply
    12,218.40x = 18,327.60 × 7,293.60
  4. Step 4: Simplify right side
    12,218.40x = 133,674,183.36
  5. Step 5: Solve for x
    x = 133,674,183.36/12,218.40
  6. Step 6: Final answer
    x = 10,940.40

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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.