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Finding the Fourth Proportional to 11,980.44, 17,970.48 and 4,189.32

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Solution

The fourth proportional to 11,980.44, 17,970.48 and 4,189.32 is: 6,283.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,980.44 : 17,970.48 = 4,189.32 : x
  2. Step 2: Convert to fraction form
    11,980.44/17,970.48 = 4,189.32/x
  3. Step 3: Cross multiply
    11,980.44x = 17,970.48 × 4,189.32
  4. Step 4: Simplify right side
    11,980.44x = 75,284,091.27
  5. Step 5: Solve for x
    x = 75,284,091.27/11,980.44
  6. Step 6: Final answer
    x = 6,283.92

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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.