Home / 20,452.21-30,678.27-5,661.08

Finding the Fourth Proportional to 20,452.21, 30,678.27 and 5,661.08

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Solution

The fourth proportional to 20,452.21, 30,678.27 and 5,661.08 is: 8,491.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,452.21 : 30,678.27 = 5,661.08 : x
  2. Step 2: Convert to fraction form
    20,452.21/30,678.27 = 5,661.08/x
  3. Step 3: Cross multiply
    20,452.21x = 30,678.27 × 5,661.08
  4. Step 4: Simplify right side
    20,452.21x = 173,672,140.73
  5. Step 5: Solve for x
    x = 173,672,140.73/20,452.21
  6. Step 6: Final answer
    x = 8,491.61

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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.