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Finding the Fourth Proportional to 11,967.57, 17,955.02 and 6,128.31

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Solution

The fourth proportional to 11,967.57, 17,955.02 and 6,128.31 is: 9,194.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,967.57 : 17,955.02 = 6,128.31 : x
  2. Step 2: Convert to fraction form
    11,967.57/17,955.02 = 6,128.31/x
  3. Step 3: Cross multiply
    11,967.57x = 17,955.02 × 6,128.31
  4. Step 4: Simplify right side
    11,967.57x = 110,033,928.62
  5. Step 5: Solve for x
    x = 110,033,928.62/11,967.57
  6. Step 6: Final answer
    x = 9,194.34

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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.