Home / 20,171.68-30,231.24-10,302.64

Finding the Fourth Proportional to 20,171.68, 30,231.24 and 10,302.64

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Solution

The fourth proportional to 20,171.68, 30,231.24 and 10,302.64 is: 15,440.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,171.68 : 30,231.24 = 10,302.64 : x
  2. Step 2: Convert to fraction form
    20,171.68/30,231.24 = 10,302.64/x
  3. Step 3: Cross multiply
    20,171.68x = 30,231.24 × 10,302.64
  4. Step 4: Simplify right side
    20,171.68x = 311,461,582.47
  5. Step 5: Solve for x
    x = 311,461,582.47/20,171.68
  6. Step 6: Final answer
    x = 15,440.54

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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.