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Finding the Fourth Proportional to 14,112, 21,238.88 and 10,620.09

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Solution

The fourth proportional to 14,112, 21,238.88 and 10,620.09 is: 15,983.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,112 : 21,238.88 = 10,620.09 : x
  2. Step 2: Convert to fraction form
    14,112/21,238.88 = 10,620.09/x
  3. Step 3: Cross multiply
    14,112x = 21,238.88 × 10,620.09
  4. Step 4: Simplify right side
    14,112x = 225,558,843.65
  5. Step 5: Solve for x
    x = 225,558,843.65/14,112
  6. Step 6: Final answer
    x = 15,983.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.