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Finding the Fourth Proportional to 18,563.79, 27,852.07 and 5,418.10

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Solution

The fourth proportional to 18,563.79, 27,852.07 and 5,418.10 is: 8,129.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,563.79 : 27,852.07 = 5,418.10 : x
  2. Step 2: Convert to fraction form
    18,563.79/27,852.07 = 5,418.10/x
  3. Step 3: Cross multiply
    18,563.79x = 27,852.07 × 5,418.10
  4. Step 4: Simplify right side
    18,563.79x = 150,905,300.47
  5. Step 5: Solve for x
    x = 150,905,300.47/18,563.79
  6. Step 6: Final answer
    x = 8,129.01

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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.