Home / 13,491.27-20,251.26-8,820.68

Finding the Fourth Proportional to 13,491.27, 20,251.26 and 8,820.68

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Solution

The fourth proportional to 13,491.27, 20,251.26 and 8,820.68 is: 13,240.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,491.27 : 20,251.26 = 8,820.68 : x
  2. Step 2: Convert to fraction form
    13,491.27/20,251.26 = 8,820.68/x
  3. Step 3: Cross multiply
    13,491.27x = 20,251.26 × 8,820.68
  4. Step 4: Simplify right side
    13,491.27x = 178,629,782.80
  5. Step 5: Solve for x
    x = 178,629,782.80/13,491.27
  6. Step 6: Final answer
    x = 13,240.40

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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.