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Finding the Fourth Proportional to 20,754.01, 28,641.09 and 11,802.97

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Solution

The fourth proportional to 20,754.01, 28,641.09 and 11,802.97 is: 16,288.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,754.01 : 28,641.09 = 11,802.97 : x
  2. Step 2: Convert to fraction form
    20,754.01/28,641.09 = 11,802.97/x
  3. Step 3: Cross multiply
    20,754.01x = 28,641.09 × 11,802.97
  4. Step 4: Simplify right side
    20,754.01x = 338,049,926.04
  5. Step 5: Solve for x
    x = 338,049,926.04/20,754.01
  6. Step 6: Final answer
    x = 16,288.41

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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.