Home / 12,387.33-18,584.24-7,188.75

Finding the Fourth Proportional to 12,387.33, 18,584.24 and 7,188.75

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Solution

The fourth proportional to 12,387.33, 18,584.24 and 7,188.75 is: 10,785.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,387.33 : 18,584.24 = 7,188.75 : x
  2. Step 2: Convert to fraction form
    12,387.33/18,584.24 = 7,188.75/x
  3. Step 3: Cross multiply
    12,387.33x = 18,584.24 × 7,188.75
  4. Step 4: Simplify right side
    12,387.33x = 133,597,419.36
  5. Step 5: Solve for x
    x = 133,597,419.36/12,387.33
  6. Step 6: Final answer
    x = 10,785.01

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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.