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Finding the Fourth Proportional to 20,773.70, 28,667.70 and 11,342.27

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Solution

The fourth proportional to 20,773.70, 28,667.70 and 11,342.27 is: 15,652.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,773.70 : 28,667.70 = 11,342.27 : x
  2. Step 2: Convert to fraction form
    20,773.70/28,667.70 = 11,342.27/x
  3. Step 3: Cross multiply
    20,773.70x = 28,667.70 × 11,342.27
  4. Step 4: Simplify right side
    20,773.70x = 325,156,593.63
  5. Step 5: Solve for x
    x = 325,156,593.63/20,773.70
  6. Step 6: Final answer
    x = 15,652.32

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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.