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Finding the Fourth Proportional to 18,391.92, 27,510.56 and 15,504

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Solution

The fourth proportional to 18,391.92, 27,510.56 and 15,504 is: 23,190.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,391.92 : 27,510.56 = 15,504 : x
  2. Step 2: Convert to fraction form
    18,391.92/27,510.56 = 15,504/x
  3. Step 3: Cross multiply
    18,391.92x = 27,510.56 × 15,504
  4. Step 4: Simplify right side
    18,391.92x = 426,523,722.24
  5. Step 5: Solve for x
    x = 426,523,722.24/18,391.92
  6. Step 6: Final answer
    x = 23,190.82

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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.