Home / 13,441.60-20,162.40-8,516.80

Finding the Fourth Proportional to 13,441.60, 20,162.40 and 8,516.80

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Solution

The fourth proportional to 13,441.60, 20,162.40 and 8,516.80 is: 12,775.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,441.60 : 20,162.40 = 8,516.80 : x
  2. Step 2: Convert to fraction form
    13,441.60/20,162.40 = 8,516.80/x
  3. Step 3: Cross multiply
    13,441.60x = 20,162.40 × 8,516.80
  4. Step 4: Simplify right side
    13,441.60x = 171,719,128.32
  5. Step 5: Solve for x
    x = 171,719,128.32/13,441.60
  6. Step 6: Final answer
    x = 12,775.20

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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.