Home / 12,213.40-18,333.06-11,591.32

Finding the Fourth Proportional to 12,213.40, 18,333.06 and 11,591.32

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Solution

The fourth proportional to 12,213.40, 18,333.06 and 11,591.32 is: 17,399.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,213.40 : 18,333.06 = 11,591.32 : x
  2. Step 2: Convert to fraction form
    12,213.40/18,333.06 = 11,591.32/x
  3. Step 3: Cross multiply
    12,213.40x = 18,333.06 × 11,591.32
  4. Step 4: Simplify right side
    12,213.40x = 212,504,365.04
  5. Step 5: Solve for x
    x = 212,504,365.04/12,213.40
  6. Step 6: Final answer
    x = 17,399.28

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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.