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Finding the Fourth Proportional to 18,558.92, 27,801.29 and 11,159.31

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Solution

The fourth proportional to 18,558.92, 27,801.29 and 11,159.31 is: 16,716.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,558.92 : 27,801.29 = 11,159.31 : x
  2. Step 2: Convert to fraction form
    18,558.92/27,801.29 = 11,159.31/x
  3. Step 3: Cross multiply
    18,558.92x = 27,801.29 × 11,159.31
  4. Step 4: Simplify right side
    18,558.92x = 310,243,157.71
  5. Step 5: Solve for x
    x = 310,243,157.71/18,558.92
  6. Step 6: Final answer
    x = 16,716.66

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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.