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Finding the Fourth Proportional to 20,473.25, 28,251.41 and 11,522.25

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Solution

The fourth proportional to 20,473.25, 28,251.41 and 11,522.25 is: 15,899.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,473.25 : 28,251.41 = 11,522.25 : x
  2. Step 2: Convert to fraction form
    20,473.25/28,251.41 = 11,522.25/x
  3. Step 3: Cross multiply
    20,473.25x = 28,251.41 × 11,522.25
  4. Step 4: Simplify right side
    20,473.25x = 325,519,751.26
  5. Step 5: Solve for x
    x = 325,519,751.26/20,473.25
  6. Step 6: Final answer
    x = 15,899.76

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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.