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Finding the Fourth Proportional to 20,613.80, 30,958.62 and 10,759.72

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Solution

The fourth proportional to 20,613.80, 30,958.62 and 10,759.72 is: 16,159.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,613.80 : 30,958.62 = 10,759.72 : x
  2. Step 2: Convert to fraction form
    20,613.80/30,958.62 = 10,759.72/x
  3. Step 3: Cross multiply
    20,613.80x = 30,958.62 × 10,759.72
  4. Step 4: Simplify right side
    20,613.80x = 333,106,082.79
  5. Step 5: Solve for x
    x = 333,106,082.79/20,613.80
  6. Step 6: Final answer
    x = 16,159.37

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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.