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Finding the Fourth Proportional to 20,632.79, 30,951.24 and 7,486.19

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Solution

The fourth proportional to 20,632.79, 30,951.24 and 7,486.19 is: 11,230.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,632.79 : 30,951.24 = 7,486.19 : x
  2. Step 2: Convert to fraction form
    20,632.79/30,951.24 = 7,486.19/x
  3. Step 3: Cross multiply
    20,632.79x = 30,951.24 × 7,486.19
  4. Step 4: Simplify right side
    20,632.79x = 231,706,796.61
  5. Step 5: Solve for x
    x = 231,706,796.61/20,632.79
  6. Step 6: Final answer
    x = 11,230.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.