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Finding the Fourth Proportional to 20,773.28, 28,667.04 and 11,341.88

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Solution

The fourth proportional to 20,773.28, 28,667.04 and 11,341.88 is: 15,651.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,773.28 : 28,667.04 = 11,341.88 : x
  2. Step 2: Convert to fraction form
    20,773.28/28,667.04 = 11,341.88/x
  3. Step 3: Cross multiply
    20,773.28x = 28,667.04 × 11,341.88
  4. Step 4: Simplify right side
    20,773.28x = 325,138,127.64
  5. Step 5: Solve for x
    x = 325,138,127.64/20,773.28
  6. Step 6: Final answer
    x = 15,651.75

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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.