Home / 20,175.48-30,243.78-10,808.64

Finding the Fourth Proportional to 20,175.48, 30,243.78 and 10,808.64

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Solution

The fourth proportional to 20,175.48, 30,243.78 and 10,808.64 is: 16,202.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,175.48 : 30,243.78 = 10,808.64 : x
  2. Step 2: Convert to fraction form
    20,175.48/30,243.78 = 10,808.64/x
  3. Step 3: Cross multiply
    20,175.48x = 30,243.78 × 10,808.64
  4. Step 4: Simplify right side
    20,175.48x = 326,894,130.26
  5. Step 5: Solve for x
    x = 326,894,130.26/20,175.48
  6. Step 6: Final answer
    x = 16,202.55

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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.