Home / 13,515.74-20,255.18-8,576.54

Finding the Fourth Proportional to 13,515.74, 20,255.18 and 8,576.54

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Solution

The fourth proportional to 13,515.74, 20,255.18 and 8,576.54 is: 12,853.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,515.74 : 20,255.18 = 8,576.54 : x
  2. Step 2: Convert to fraction form
    13,515.74/20,255.18 = 8,576.54/x
  3. Step 3: Cross multiply
    13,515.74x = 20,255.18 × 8,576.54
  4. Step 4: Simplify right side
    13,515.74x = 173,719,217.32
  5. Step 5: Solve for x
    x = 173,719,217.32/13,515.74
  6. Step 6: Final answer
    x = 12,853.11

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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.