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Finding the Fourth Proportional to 19,843.32, 27,384.03 and 10,890.66

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Solution

The fourth proportional to 19,843.32, 27,384.03 and 10,890.66 is: 15,029.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,843.32 : 27,384.03 = 10,890.66 : x
  2. Step 2: Convert to fraction form
    19,843.32/27,384.03 = 10,890.66/x
  3. Step 3: Cross multiply
    19,843.32x = 27,384.03 × 10,890.66
  4. Step 4: Simplify right side
    19,843.32x = 298,230,160.16
  5. Step 5: Solve for x
    x = 298,230,160.16/19,843.32
  6. Step 6: Final answer
    x = 15,029.25

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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.