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Finding the Fourth Proportional to 20,633.79, 30,952.74 and 7,487.19

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Solution

The fourth proportional to 20,633.79, 30,952.74 and 7,487.19 is: 11,231.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,633.79 : 30,952.74 = 7,487.19 : x
  2. Step 2: Convert to fraction form
    20,633.79/30,952.74 = 7,487.19/x
  3. Step 3: Cross multiply
    20,633.79x = 30,952.74 × 7,487.19
  4. Step 4: Simplify right side
    20,633.79x = 231,749,045.40
  5. Step 5: Solve for x
    x = 231,749,045.40/20,633.79
  6. Step 6: Final answer
    x = 11,231.53

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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.