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Finding the Fourth Proportional to 12,141.80, 16,755.61 and 6,838.32

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Solution

The fourth proportional to 12,141.80, 16,755.61 and 6,838.32 is: 9,436.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,141.80 : 16,755.61 = 6,838.32 : x
  2. Step 2: Convert to fraction form
    12,141.80/16,755.61 = 6,838.32/x
  3. Step 3: Cross multiply
    12,141.80x = 16,755.61 × 6,838.32
  4. Step 4: Simplify right side
    12,141.80x = 114,580,281.53
  5. Step 5: Solve for x
    x = 114,580,281.53/12,141.80
  6. Step 6: Final answer
    x = 9,436.85

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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.