Home / 20,289.15-28,002.24-12,333.87

Finding the Fourth Proportional to 20,289.15, 28,002.24 and 12,333.87

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Solution

The fourth proportional to 20,289.15, 28,002.24 and 12,333.87 is: 17,022.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,289.15 : 28,002.24 = 12,333.87 : x
  2. Step 2: Convert to fraction form
    20,289.15/28,002.24 = 12,333.87/x
  3. Step 3: Cross multiply
    20,289.15x = 28,002.24 × 12,333.87
  4. Step 4: Simplify right side
    20,289.15x = 345,375,987.87
  5. Step 5: Solve for x
    x = 345,375,987.87/20,289.15
  6. Step 6: Final answer
    x = 17,022.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.