Home / 11,928.16-17,881.30-4,131.50

Finding the Fourth Proportional to 11,928.16, 17,881.30 and 4,131.50

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Solution

The fourth proportional to 11,928.16, 17,881.30 and 4,131.50 is: 6,193.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,928.16 : 17,881.30 = 4,131.50 : x
  2. Step 2: Convert to fraction form
    11,928.16/17,881.30 = 4,131.50/x
  3. Step 3: Cross multiply
    11,928.16x = 17,881.30 × 4,131.50
  4. Step 4: Simplify right side
    11,928.16x = 73,876,570.29
  5. Step 5: Solve for x
    x = 73,876,570.29/11,928.16
  6. Step 6: Final answer
    x = 6,193.46

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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.