Home / 18,109.68-27,182.94-12,487.72

Finding the Fourth Proportional to 18,109.68, 27,182.94 and 12,487.72

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Solution

The fourth proportional to 18,109.68, 27,182.94 and 12,487.72 is: 18,744.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,109.68 : 27,182.94 = 12,487.72 : x
  2. Step 2: Convert to fraction form
    18,109.68/27,182.94 = 12,487.72/x
  3. Step 3: Cross multiply
    18,109.68x = 27,182.94 × 12,487.72
  4. Step 4: Simplify right side
    18,109.68x = 339,452,949.92
  5. Step 5: Solve for x
    x = 339,452,949.92/18,109.68
  6. Step 6: Final answer
    x = 18,744.29

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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.