Home / 18,115.29-27,178.83-8,756.37

Finding the Fourth Proportional to 18,115.29, 27,178.83 and 8,756.37

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Solution

The fourth proportional to 18,115.29, 27,178.83 and 8,756.37 is: 13,137.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,115.29 : 27,178.83 = 8,756.37 : x
  2. Step 2: Convert to fraction form
    18,115.29/27,178.83 = 8,756.37/x
  3. Step 3: Cross multiply
    18,115.29x = 27,178.83 × 8,756.37
  4. Step 4: Simplify right side
    18,115.29x = 237,987,891.65
  5. Step 5: Solve for x
    x = 237,987,891.65/18,115.29
  6. Step 6: Final answer
    x = 13,137.40

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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.