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Finding the Fourth Proportional to 11,361.60, 17,042.40 and 10,516.80

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Solution

The fourth proportional to 11,361.60, 17,042.40 and 10,516.80 is: 15,775.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,361.60 : 17,042.40 = 10,516.80 : x
  2. Step 2: Convert to fraction form
    11,361.60/17,042.40 = 10,516.80/x
  3. Step 3: Cross multiply
    11,361.60x = 17,042.40 × 10,516.80
  4. Step 4: Simplify right side
    11,361.60x = 179,231,512.32
  5. Step 5: Solve for x
    x = 179,231,512.32/11,361.60
  6. Step 6: Final answer
    x = 15,775.20

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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.