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Finding the Fourth Proportional to 18,391.92, 27,603.80 and 9,632.96

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Solution

The fourth proportional to 18,391.92, 27,603.80 and 9,632.96 is: 14,457.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,391.92 : 27,603.80 = 9,632.96 : x
  2. Step 2: Convert to fraction form
    18,391.92/27,603.80 = 9,632.96/x
  3. Step 3: Cross multiply
    18,391.92x = 27,603.80 × 9,632.96
  4. Step 4: Simplify right side
    18,391.92x = 265,906,301.25
  5. Step 5: Solve for x
    x = 265,906,301.25/18,391.92
  6. Step 6: Final answer
    x = 14,457.78

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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.