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Finding the Fourth Proportional to 14,043.42, 19,379.88 and 7,755.75

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Solution

The fourth proportional to 14,043.42, 19,379.88 and 7,755.75 is: 10,702.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,043.42 : 19,379.88 = 7,755.75 : x
  2. Step 2: Convert to fraction form
    14,043.42/19,379.88 = 7,755.75/x
  3. Step 3: Cross multiply
    14,043.42x = 19,379.88 × 7,755.75
  4. Step 4: Simplify right side
    14,043.42x = 150,305,504.31
  5. Step 5: Solve for x
    x = 150,305,504.31/14,043.42
  6. Step 6: Final answer
    x = 10,702.91

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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.