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Finding the Fourth Proportional to 18,440.96, 27,661.44 and 7,904.13

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Solution

The fourth proportional to 18,440.96, 27,661.44 and 7,904.13 is: 11,856.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,440.96 : 27,661.44 = 7,904.13 : x
  2. Step 2: Convert to fraction form
    18,440.96/27,661.44 = 7,904.13/x
  3. Step 3: Cross multiply
    18,440.96x = 27,661.44 × 7,904.13
  4. Step 4: Simplify right side
    18,440.96x = 218,639,617.75
  5. Step 5: Solve for x
    x = 218,639,617.75/18,440.96
  6. Step 6: Final answer
    x = 11,856.20

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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.