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Finding the Fourth Proportional to 20,199.51, 30,299.40 and 7,051.88

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Solution

The fourth proportional to 20,199.51, 30,299.40 and 7,051.88 is: 10,577.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,199.51 : 30,299.40 = 7,051.88 : x
  2. Step 2: Convert to fraction form
    20,199.51/30,299.40 = 7,051.88/x
  3. Step 3: Cross multiply
    20,199.51x = 30,299.40 × 7,051.88
  4. Step 4: Simplify right side
    20,199.51x = 213,667,808.62
  5. Step 5: Solve for x
    x = 213,667,808.62/20,199.51
  6. Step 6: Final answer
    x = 10,577.87

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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.