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Finding the Fourth Proportional to 18,406.66, 27,610.44 and 6,719.89

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Solution

The fourth proportional to 18,406.66, 27,610.44 and 6,719.89 is: 10,080.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,406.66 : 27,610.44 = 6,719.89 : x
  2. Step 2: Convert to fraction form
    18,406.66/27,610.44 = 6,719.89/x
  3. Step 3: Cross multiply
    18,406.66x = 27,610.44 × 6,719.89
  4. Step 4: Simplify right side
    18,406.66x = 185,539,119.65
  5. Step 5: Solve for x
    x = 185,539,119.65/18,406.66
  6. Step 6: Final answer
    x = 10,080.00

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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.