Home / 20,171.88-30,285.90-10,317.96

Finding the Fourth Proportional to 20,171.88, 30,285.90 and 10,317.96

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Solution

The fourth proportional to 20,171.88, 30,285.90 and 10,317.96 is: 15,491.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,171.88 : 30,285.90 = 10,317.96 : x
  2. Step 2: Convert to fraction form
    20,171.88/30,285.90 = 10,317.96/x
  3. Step 3: Cross multiply
    20,171.88x = 30,285.90 × 10,317.96
  4. Step 4: Simplify right side
    20,171.88x = 312,488,704.76
  5. Step 5: Solve for x
    x = 312,488,704.76/20,171.88
  6. Step 6: Final answer
    x = 15,491.30

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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.