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Finding the Fourth Proportional to 12,239.94, 16,891.12 and 6,650.94

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Solution

The fourth proportional to 12,239.94, 16,891.12 and 6,650.94 is: 9,178.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,239.94 : 16,891.12 = 6,650.94 : x
  2. Step 2: Convert to fraction form
    12,239.94/16,891.12 = 6,650.94/x
  3. Step 3: Cross multiply
    12,239.94x = 16,891.12 × 6,650.94
  4. Step 4: Simplify right side
    12,239.94x = 112,341,792.40
  5. Step 5: Solve for x
    x = 112,341,792.40/12,239.94
  6. Step 6: Final answer
    x = 9,178.30

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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.