Home / 18,867.11-28,299.04-6,386.85

Finding the Fourth Proportional to 18,867.11, 28,299.04 and 6,386.85

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Solution

The fourth proportional to 18,867.11, 28,299.04 and 6,386.85 is: 9,579.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,867.11 : 28,299.04 = 6,386.85 : x
  2. Step 2: Convert to fraction form
    18,867.11/28,299.04 = 6,386.85/x
  3. Step 3: Cross multiply
    18,867.11x = 28,299.04 × 6,386.85
  4. Step 4: Simplify right side
    18,867.11x = 180,741,707.66
  5. Step 5: Solve for x
    x = 180,741,707.66/18,867.11
  6. Step 6: Final answer
    x = 9,579.73

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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.