Home / 20,805.90-31,213.46-6,013.69

Finding the Fourth Proportional to 20,805.90, 31,213.46 and 6,013.69

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Solution

The fourth proportional to 20,805.90, 31,213.46 and 6,013.69 is: 9,021.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,805.90 : 31,213.46 = 6,013.69 : x
  2. Step 2: Convert to fraction form
    20,805.90/31,213.46 = 6,013.69/x
  3. Step 3: Cross multiply
    20,805.90x = 31,213.46 × 6,013.69
  4. Step 4: Simplify right side
    20,805.90x = 187,708,072.27
  5. Step 5: Solve for x
    x = 187,708,072.27/20,805.90
  6. Step 6: Final answer
    x = 9,021.87

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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.