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Finding the Fourth Proportional to 18,519.72, 27,804.12 and 11,037.12

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Solution

The fourth proportional to 18,519.72, 27,804.12 and 11,037.12 is: 16,570.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,519.72 : 27,804.12 = 11,037.12 : x
  2. Step 2: Convert to fraction form
    18,519.72/27,804.12 = 11,037.12/x
  3. Step 3: Cross multiply
    18,519.72x = 27,804.12 × 11,037.12
  4. Step 4: Simplify right side
    18,519.72x = 306,877,408.93
  5. Step 5: Solve for x
    x = 306,877,408.93/18,519.72
  6. Step 6: Final answer
    x = 16,570.31

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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.