Home / 20,090.81-30,135.82-6,239.77

Finding the Fourth Proportional to 20,090.81, 30,135.82 and 6,239.77

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Solution

The fourth proportional to 20,090.81, 30,135.82 and 6,239.77 is: 9,359.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,090.81 : 30,135.82 = 6,239.77 : x
  2. Step 2: Convert to fraction form
    20,090.81/30,135.82 = 6,239.77/x
  3. Step 3: Cross multiply
    20,090.81x = 30,135.82 × 6,239.77
  4. Step 4: Simplify right side
    20,090.81x = 188,040,554.36
  5. Step 5: Solve for x
    x = 188,040,554.36/20,090.81
  6. Step 6: Final answer
    x = 9,359.53

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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.