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Finding the Fourth Proportional to 18,405.48, 27,619.59 and 8,018.04

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Solution

The fourth proportional to 18,405.48, 27,619.59 and 8,018.04 is: 12,032.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,405.48 : 27,619.59 = 8,018.04 : x
  2. Step 2: Convert to fraction form
    18,405.48/27,619.59 = 8,018.04/x
  3. Step 3: Cross multiply
    18,405.48x = 27,619.59 × 8,018.04
  4. Step 4: Simplify right side
    18,405.48x = 221,454,977.40
  5. Step 5: Solve for x
    x = 221,454,977.40/18,405.48
  6. Step 6: Final answer
    x = 12,032.01

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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.