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Finding the Fourth Proportional to 18,509.72, 27,767.03 and 9,745.11

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Solution

The fourth proportional to 18,509.72, 27,767.03 and 9,745.11 is: 14,618.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,509.72 : 27,767.03 = 9,745.11 : x
  2. Step 2: Convert to fraction form
    18,509.72/27,767.03 = 9,745.11/x
  3. Step 3: Cross multiply
    18,509.72x = 27,767.03 × 9,745.11
  4. Step 4: Simplify right side
    18,509.72x = 270,592,713.00
  5. Step 5: Solve for x
    x = 270,592,713.00/18,509.72
  6. Step 6: Final answer
    x = 14,618.96

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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.