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Finding the Fourth Proportional to 20,993.55, 31,487.55 and 6,950.09

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Solution

The fourth proportional to 20,993.55, 31,487.55 and 6,950.09 is: 10,424.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,993.55 : 31,487.55 = 6,950.09 : x
  2. Step 2: Convert to fraction form
    20,993.55/31,487.55 = 6,950.09/x
  3. Step 3: Cross multiply
    20,993.55x = 31,487.55 × 6,950.09
  4. Step 4: Simplify right side
    20,993.55x = 218,841,306.38
  5. Step 5: Solve for x
    x = 218,841,306.38/20,993.55
  6. Step 6: Final answer
    x = 10,424.22

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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.