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Finding the Fourth Proportional to 18,018.54, 27,027.81 and 13,119.36

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Solution

The fourth proportional to 18,018.54, 27,027.81 and 13,119.36 is: 19,679.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,018.54 : 27,027.81 = 13,119.36 : x
  2. Step 2: Convert to fraction form
    18,018.54/27,027.81 = 13,119.36/x
  3. Step 3: Cross multiply
    18,018.54x = 27,027.81 × 13,119.36
  4. Step 4: Simplify right side
    18,018.54x = 354,587,569.40
  5. Step 5: Solve for x
    x = 354,587,569.40/18,018.54
  6. Step 6: Final answer
    x = 19,679.04

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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.