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Finding the Fourth Proportional to 20,682.58, 28,542.04 and 11,251.14

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Solution

The fourth proportional to 20,682.58, 28,542.04 and 11,251.14 is: 15,526.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,682.58 : 28,542.04 = 11,251.14 : x
  2. Step 2: Convert to fraction form
    20,682.58/28,542.04 = 11,251.14/x
  3. Step 3: Cross multiply
    20,682.58x = 28,542.04 × 11,251.14
  4. Step 4: Simplify right side
    20,682.58x = 321,130,487.93
  5. Step 5: Solve for x
    x = 321,130,487.93/20,682.58
  6. Step 6: Final answer
    x = 15,526.62

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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.