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Finding the Fourth Proportional to 20,560.44, 30,822.03 and 13,166.76

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Solution

The fourth proportional to 20,560.44, 30,822.03 and 13,166.76 is: 19,738.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,560.44 : 30,822.03 = 13,166.76 : x
  2. Step 2: Convert to fraction form
    20,560.44/30,822.03 = 13,166.76/x
  3. Step 3: Cross multiply
    20,560.44x = 30,822.03 × 13,166.76
  4. Step 4: Simplify right side
    20,560.44x = 405,826,271.72
  5. Step 5: Solve for x
    x = 405,826,271.72/20,560.44
  6. Step 6: Final answer
    x = 19,738.21

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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.