Home / 15,175.28-20,909.40-10,198.64

Finding the Fourth Proportional to 15,175.28, 20,909.40 and 10,198.64

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Solution

The fourth proportional to 15,175.28, 20,909.40 and 10,198.64 is: 14,052.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,175.28 : 20,909.40 = 10,198.64 : x
  2. Step 2: Convert to fraction form
    15,175.28/20,909.40 = 10,198.64/x
  3. Step 3: Cross multiply
    15,175.28x = 20,909.40 × 10,198.64
  4. Step 4: Simplify right side
    15,175.28x = 213,247,443.22
  5. Step 5: Solve for x
    x = 213,247,443.22/15,175.28
  6. Step 6: Final answer
    x = 14,052.29

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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.