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Finding the Fourth Proportional to 18,568.98, 27,810.56 and 11,157.10

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Solution

The fourth proportional to 18,568.98, 27,810.56 and 11,157.10 is: 16,709.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,568.98 : 27,810.56 = 11,157.10 : x
  2. Step 2: Convert to fraction form
    18,568.98/27,810.56 = 11,157.10/x
  3. Step 3: Cross multiply
    18,568.98x = 27,810.56 × 11,157.10
  4. Step 4: Simplify right side
    18,568.98x = 310,285,004.14
  5. Step 5: Solve for x
    x = 310,285,004.14/18,568.98
  6. Step 6: Final answer
    x = 16,709.86

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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.