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Finding the Fourth Proportional to 20,001.92, 27,625.92 and 15,275.84

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Solution

The fourth proportional to 20,001.92, 27,625.92 and 15,275.84 is: 21,098.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,001.92 : 27,625.92 = 15,275.84 : x
  2. Step 2: Convert to fraction form
    20,001.92/27,625.92 = 15,275.84/x
  3. Step 3: Cross multiply
    20,001.92x = 27,625.92 × 15,275.84
  4. Step 4: Simplify right side
    20,001.92x = 422,009,133.77
  5. Step 5: Solve for x
    x = 422,009,133.77/20,001.92
  6. Step 6: Final answer
    x = 21,098.43

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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.