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Finding the Fourth Proportional to 16,745.76, 23,109.08 and 9,191.92

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Solution

The fourth proportional to 16,745.76, 23,109.08 and 9,191.92 is: 12,684.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,745.76 : 23,109.08 = 9,191.92 : x
  2. Step 2: Convert to fraction form
    16,745.76/23,109.08 = 9,191.92/x
  3. Step 3: Cross multiply
    16,745.76x = 23,109.08 × 9,191.92
  4. Step 4: Simplify right side
    16,745.76x = 212,416,814.63
  5. Step 5: Solve for x
    x = 212,416,814.63/16,745.76
  6. Step 6: Final answer
    x = 12,684.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.