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Finding the Fourth Proportional to 18,622.19, 27,936.73 and 6,143.07

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Solution

The fourth proportional to 18,622.19, 27,936.73 and 6,143.07 is: 9,215.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,622.19 : 27,936.73 = 6,143.07 : x
  2. Step 2: Convert to fraction form
    18,622.19/27,936.73 = 6,143.07/x
  3. Step 3: Cross multiply
    18,622.19x = 27,936.73 × 6,143.07
  4. Step 4: Simplify right side
    18,622.19x = 171,617,383.13
  5. Step 5: Solve for x
    x = 171,617,383.13/18,622.19
  6. Step 6: Final answer
    x = 9,215.75

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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.