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Finding the Fourth Proportional to 16,238.50, 22,409.13 and 8,786.50

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Solution

The fourth proportional to 16,238.50, 22,409.13 and 8,786.50 is: 12,125.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,238.50 : 22,409.13 = 8,786.50 : x
  2. Step 2: Convert to fraction form
    16,238.50/22,409.13 = 8,786.50/x
  3. Step 3: Cross multiply
    16,238.50x = 22,409.13 × 8,786.50
  4. Step 4: Simplify right side
    16,238.50x = 196,897,820.75
  5. Step 5: Solve for x
    x = 196,897,820.75/16,238.50
  6. Step 6: Final answer
    x = 12,125.37

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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.