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Finding the Fourth Proportional to 14,446.80, 21,702.60 and 10,072.80

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Solution

The fourth proportional to 14,446.80, 21,702.60 and 10,072.80 is: 15,131.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,446.80 : 21,702.60 = 10,072.80 : x
  2. Step 2: Convert to fraction form
    14,446.80/21,702.60 = 10,072.80/x
  3. Step 3: Cross multiply
    14,446.80x = 21,702.60 × 10,072.80
  4. Step 4: Simplify right side
    14,446.80x = 218,605,949.28
  5. Step 5: Solve for x
    x = 218,605,949.28/14,446.80
  6. Step 6: Final answer
    x = 15,131.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.