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Finding the Fourth Proportional to 20,040.81, 30,060.90 and 6,893.29

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Solution

The fourth proportional to 20,040.81, 30,060.90 and 6,893.29 is: 10,339.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,040.81 : 30,060.90 = 6,893.29 : x
  2. Step 2: Convert to fraction form
    20,040.81/30,060.90 = 6,893.29/x
  3. Step 3: Cross multiply
    20,040.81x = 30,060.90 × 6,893.29
  4. Step 4: Simplify right side
    20,040.81x = 207,218,501.36
  5. Step 5: Solve for x
    x = 207,218,501.36/20,040.81
  6. Step 6: Final answer
    x = 10,339.83

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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.