Home / 13,424.43-18,527.42-8,119.28

Finding the Fourth Proportional to 13,424.43, 18,527.42 and 8,119.28

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Solution

The fourth proportional to 13,424.43, 18,527.42 and 8,119.28 is: 11,205.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,424.43 : 18,527.42 = 8,119.28 : x
  2. Step 2: Convert to fraction form
    13,424.43/18,527.42 = 8,119.28/x
  3. Step 3: Cross multiply
    13,424.43x = 18,527.42 × 8,119.28
  4. Step 4: Simplify right side
    13,424.43x = 150,429,310.66
  5. Step 5: Solve for x
    x = 150,429,310.66/13,424.43
  6. Step 6: Final answer
    x = 11,205.64

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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.