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Finding the Fourth Proportional to 13,059.60, 18,025.92 and 8,343.28

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Solution

The fourth proportional to 13,059.60, 18,025.92 and 8,343.28 is: 11,516.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,059.60 : 18,025.92 = 8,343.28 : x
  2. Step 2: Convert to fraction form
    13,059.60/18,025.92 = 8,343.28/x
  3. Step 3: Cross multiply
    13,059.60x = 18,025.92 × 8,343.28
  4. Step 4: Simplify right side
    13,059.60x = 150,395,297.82
  5. Step 5: Solve for x
    x = 150,395,297.82/13,059.60
  6. Step 6: Final answer
    x = 11,516.07

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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.