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Finding the Fourth Proportional to 15,843.52, 21,855.30 and 10,179.12

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Solution

The fourth proportional to 15,843.52, 21,855.30 and 10,179.12 is: 14,041.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,843.52 : 21,855.30 = 10,179.12 : x
  2. Step 2: Convert to fraction form
    15,843.52/21,855.30 = 10,179.12/x
  3. Step 3: Cross multiply
    15,843.52x = 21,855.30 × 10,179.12
  4. Step 4: Simplify right side
    15,843.52x = 222,467,612.06
  5. Step 5: Solve for x
    x = 222,467,612.06/15,843.52
  6. Step 6: Final answer
    x = 14,041.55

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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.