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Finding the Fourth Proportional to 18,462.66, 27,697.23 and 7,939.14

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Solution

The fourth proportional to 18,462.66, 27,697.23 and 7,939.14 is: 11,910.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,462.66 : 27,697.23 = 7,939.14 : x
  2. Step 2: Convert to fraction form
    18,462.66/27,697.23 = 7,939.14/x
  3. Step 3: Cross multiply
    18,462.66x = 27,697.23 × 7,939.14
  4. Step 4: Simplify right side
    18,462.66x = 219,892,186.58
  5. Step 5: Solve for x
    x = 219,892,186.58/18,462.66
  6. Step 6: Final answer
    x = 11,910.10

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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.