Home / 11,397.20-17,079.60-7,930.40

Finding the Fourth Proportional to 11,397.20, 17,079.60 and 7,930.40

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Solution

The fourth proportional to 11,397.20, 17,079.60 and 7,930.40 is: 11,884.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,397.20 : 17,079.60 = 7,930.40 : x
  2. Step 2: Convert to fraction form
    11,397.20/17,079.60 = 7,930.40/x
  3. Step 3: Cross multiply
    11,397.20x = 17,079.60 × 7,930.40
  4. Step 4: Simplify right side
    11,397.20x = 135,448,059.84
  5. Step 5: Solve for x
    x = 135,448,059.84/11,397.20
  6. Step 6: Final answer
    x = 11,884.33

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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.