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Finding the Fourth Proportional to 27,872.47, 38,464.02 and 15,936.04

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Solution

The fourth proportional to 27,872.47, 38,464.02 and 15,936.04 is: 21,991.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,872.47 : 38,464.02 = 15,936.04 : x
  2. Step 2: Convert to fraction form
    27,872.47/38,464.02 = 15,936.04/x
  3. Step 3: Cross multiply
    27,872.47x = 38,464.02 × 15,936.04
  4. Step 4: Simplify right side
    27,872.47x = 612,963,889.28
  5. Step 5: Solve for x
    x = 612,963,889.28/27,872.47
  6. Step 6: Final answer
    x = 21,991.74

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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.