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Finding the Fourth Proportional to 20,576.52, 30,865.54 and 10,578.60

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Solution

The fourth proportional to 20,576.52, 30,865.54 and 10,578.60 is: 15,868.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,576.52 : 30,865.54 = 10,578.60 : x
  2. Step 2: Convert to fraction form
    20,576.52/30,865.54 = 10,578.60/x
  3. Step 3: Cross multiply
    20,576.52x = 30,865.54 × 10,578.60
  4. Step 4: Simplify right side
    20,576.52x = 326,514,201.44
  5. Step 5: Solve for x
    x = 326,514,201.44/20,576.52
  6. Step 6: Final answer
    x = 15,868.29

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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.