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Finding the Fourth Proportional to 12,240.50, 16,890.93 and 6,936.14

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Solution

The fourth proportional to 12,240.50, 16,890.93 and 6,936.14 is: 9,571.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,240.50 : 16,890.93 = 6,936.14 : x
  2. Step 2: Convert to fraction form
    12,240.50/16,890.93 = 6,936.14/x
  3. Step 3: Cross multiply
    12,240.50x = 16,890.93 × 6,936.14
  4. Step 4: Simplify right side
    12,240.50x = 117,157,897.44
  5. Step 5: Solve for x
    x = 117,157,897.44/12,240.50
  6. Step 6: Final answer
    x = 9,571.34

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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.