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Finding the Fourth Proportional to 18,340.63, 27,510.42 and 5,192.97

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Solution

The fourth proportional to 18,340.63, 27,510.42 and 5,192.97 is: 7,789.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,340.63 : 27,510.42 = 5,192.97 : x
  2. Step 2: Convert to fraction form
    18,340.63/27,510.42 = 5,192.97/x
  3. Step 3: Cross multiply
    18,340.63x = 27,510.42 × 5,192.97
  4. Step 4: Simplify right side
    18,340.63x = 142,860,785.75
  5. Step 5: Solve for x
    x = 142,860,785.75/18,340.63
  6. Step 6: Final answer
    x = 7,789.31

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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.