Home / 20,321.62-30,437.78-16,771.39

Finding the Fourth Proportional to 20,321.62, 30,437.78 and 16,771.39

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Solution

The fourth proportional to 20,321.62, 30,437.78 and 16,771.39 is: 25,120.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,321.62 : 30,437.78 = 16,771.39 : x
  2. Step 2: Convert to fraction form
    20,321.62/30,437.78 = 16,771.39/x
  3. Step 3: Cross multiply
    20,321.62x = 30,437.78 × 16,771.39
  4. Step 4: Simplify right side
    20,321.62x = 510,483,719.16
  5. Step 5: Solve for x
    x = 510,483,719.16/20,321.62
  6. Step 6: Final answer
    x = 25,120.23

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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.