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Finding the Fourth Proportional to 20,773.65, 28,667.49 and 11,342.22

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Solution

The fourth proportional to 20,773.65, 28,667.49 and 11,342.22 is: 15,652.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,773.65 : 28,667.49 = 11,342.22 : x
  2. Step 2: Convert to fraction form
    20,773.65/28,667.49 = 11,342.22/x
  3. Step 3: Cross multiply
    20,773.65x = 28,667.49 × 11,342.22
  4. Step 4: Simplify right side
    20,773.65x = 325,152,978.43
  5. Step 5: Solve for x
    x = 325,152,978.43/20,773.65
  6. Step 6: Final answer
    x = 15,652.18

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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.