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Finding the Fourth Proportional to 18,680.16, 27,992.64 and 10,350.08

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Solution

The fourth proportional to 18,680.16, 27,992.64 and 10,350.08 is: 15,509.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,680.16 : 27,992.64 = 10,350.08 : x
  2. Step 2: Convert to fraction form
    18,680.16/27,992.64 = 10,350.08/x
  3. Step 3: Cross multiply
    18,680.16x = 27,992.64 × 10,350.08
  4. Step 4: Simplify right side
    18,680.16x = 289,726,063.41
  5. Step 5: Solve for x
    x = 289,726,063.41/18,680.16
  6. Step 6: Final answer
    x = 15,509.83

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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.