Home / 18,867.36-28,299.40-6,387.11

Finding the Fourth Proportional to 18,867.36, 28,299.40 and 6,387.11

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Solution

The fourth proportional to 18,867.36, 28,299.40 and 6,387.11 is: 9,580.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,867.36 : 28,299.40 = 6,387.11 : x
  2. Step 2: Convert to fraction form
    18,867.36/28,299.40 = 6,387.11/x
  3. Step 3: Cross multiply
    18,867.36x = 28,299.40 × 6,387.11
  4. Step 4: Simplify right side
    18,867.36x = 180,751,380.73
  5. Step 5: Solve for x
    x = 180,751,380.73/18,867.36
  6. Step 6: Final answer
    x = 9,580.11

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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.