Home / 18,979.94-28,487.18-10,102.72

Finding the Fourth Proportional to 18,979.94, 28,487.18 and 10,102.72

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Solution

The fourth proportional to 18,979.94, 28,487.18 and 10,102.72 is: 15,163.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,979.94 : 28,487.18 = 10,102.72 : x
  2. Step 2: Convert to fraction form
    18,979.94/28,487.18 = 10,102.72/x
  3. Step 3: Cross multiply
    18,979.94x = 28,487.18 × 10,102.72
  4. Step 4: Simplify right side
    18,979.94x = 287,797,952.62
  5. Step 5: Solve for x
    x = 287,797,952.62/18,979.94
  6. Step 6: Final answer
    x = 15,163.27

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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.