Home / 20,199.50-30,299.40-7,051.89

Finding the Fourth Proportional to 20,199.50, 30,299.40 and 7,051.89

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Solution

The fourth proportional to 20,199.50, 30,299.40 and 7,051.89 is: 10,577.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,199.50 : 30,299.40 = 7,051.89 : x
  2. Step 2: Convert to fraction form
    20,199.50/30,299.40 = 7,051.89/x
  3. Step 3: Cross multiply
    20,199.50x = 30,299.40 × 7,051.89
  4. Step 4: Simplify right side
    20,199.50x = 213,668,035.87
  5. Step 5: Solve for x
    x = 213,668,035.87/20,199.50
  6. Step 6: Final answer
    x = 10,577.89

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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.