Home / 20,390.26-30,576.30-7,239.10

Finding the Fourth Proportional to 20,390.26, 30,576.30 and 7,239.10

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Solution

The fourth proportional to 20,390.26, 30,576.30 and 7,239.10 is: 10,855.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,390.26 : 30,576.30 = 7,239.10 : x
  2. Step 2: Convert to fraction form
    20,390.26/30,576.30 = 7,239.10/x
  3. Step 3: Cross multiply
    20,390.26x = 30,576.30 × 7,239.10
  4. Step 4: Simplify right side
    20,390.26x = 221,344,893.33
  5. Step 5: Solve for x
    x = 221,344,893.33/20,390.26
  6. Step 6: Final answer
    x = 10,855.42

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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.