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Finding the Fourth Proportional to 18,129.66, 27,195.79 and 7,589.07

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Solution

The fourth proportional to 18,129.66, 27,195.79 and 7,589.07 is: 11,384.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,129.66 : 27,195.79 = 7,589.07 : x
  2. Step 2: Convert to fraction form
    18,129.66/27,195.79 = 7,589.07/x
  3. Step 3: Cross multiply
    18,129.66x = 27,195.79 × 7,589.07
  4. Step 4: Simplify right side
    18,129.66x = 206,390,754.02
  5. Step 5: Solve for x
    x = 206,390,754.02/18,129.66
  6. Step 6: Final answer
    x = 11,384.15

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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.