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Finding the Fourth Proportional to 14,239.49, 21,372.48 and 7,224.48

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Solution

The fourth proportional to 14,239.49, 21,372.48 and 7,224.48 is: 10,843.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,239.49 : 21,372.48 = 7,224.48 : x
  2. Step 2: Convert to fraction form
    14,239.49/21,372.48 = 7,224.48/x
  3. Step 3: Cross multiply
    14,239.49x = 21,372.48 × 7,224.48
  4. Step 4: Simplify right side
    14,239.49x = 154,405,054.31
  5. Step 5: Solve for x
    x = 154,405,054.31/14,239.49
  6. Step 6: Final answer
    x = 10,843.44

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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.