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Finding the Fourth Proportional to 20,754.92, 28,642.65 and 11,804

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Solution

The fourth proportional to 20,754.92, 28,642.65 and 11,804 is: 16,290.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,754.92 : 28,642.65 = 11,804 : x
  2. Step 2: Convert to fraction form
    20,754.92/28,642.65 = 11,804/x
  3. Step 3: Cross multiply
    20,754.92x = 28,642.65 × 11,804
  4. Step 4: Simplify right side
    20,754.92x = 338,097,840.60
  5. Step 5: Solve for x
    x = 338,097,840.60/20,754.92
  6. Step 6: Final answer
    x = 16,290.01

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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.