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Finding the Fourth Proportional to 20,645.57, 30,968.33 and 19,593.77

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Solution

The fourth proportional to 20,645.57, 30,968.33 and 19,593.77 is: 29,390.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,645.57 : 30,968.33 = 19,593.77 : x
  2. Step 2: Convert to fraction form
    20,645.57/30,968.33 = 19,593.77/x
  3. Step 3: Cross multiply
    20,645.57x = 30,968.33 × 19,593.77
  4. Step 4: Simplify right side
    20,645.57x = 606,786,082.49
  5. Step 5: Solve for x
    x = 606,786,082.49/20,645.57
  6. Step 6: Final answer
    x = 29,390.62

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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.