Home / 20,121.48-30,151.41-10,762.83

Finding the Fourth Proportional to 20,121.48, 30,151.41 and 10,762.83

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Solution

The fourth proportional to 20,121.48, 30,151.41 and 10,762.83 is: 16,127.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,121.48 : 30,151.41 = 10,762.83 : x
  2. Step 2: Convert to fraction form
    20,121.48/30,151.41 = 10,762.83/x
  3. Step 3: Cross multiply
    20,121.48x = 30,151.41 × 10,762.83
  4. Step 4: Simplify right side
    20,121.48x = 324,514,500.09
  5. Step 5: Solve for x
    x = 324,514,500.09/20,121.48
  6. Step 6: Final answer
    x = 16,127.76

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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.