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Finding the Fourth Proportional to 20,796.54, 28,701.54 and 12,301.26

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Solution

The fourth proportional to 20,796.54, 28,701.54 and 12,301.26 is: 16,977.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,796.54 : 28,701.54 = 12,301.26 : x
  2. Step 2: Convert to fraction form
    20,796.54/28,701.54 = 12,301.26/x
  3. Step 3: Cross multiply
    20,796.54x = 28,701.54 × 12,301.26
  4. Step 4: Simplify right side
    20,796.54x = 353,065,105.94
  5. Step 5: Solve for x
    x = 353,065,105.94/20,796.54
  6. Step 6: Final answer
    x = 16,977.11

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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.