Home / 11,121.20-16,681.80-3,335.48

Finding the Fourth Proportional to 11,121.20, 16,681.80 and 3,335.48

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Solution

The fourth proportional to 11,121.20, 16,681.80 and 3,335.48 is: 5,003.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,121.20 : 16,681.80 = 3,335.48 : x
  2. Step 2: Convert to fraction form
    11,121.20/16,681.80 = 3,335.48/x
  3. Step 3: Cross multiply
    11,121.20x = 16,681.80 × 3,335.48
  4. Step 4: Simplify right side
    11,121.20x = 55,641,810.26
  5. Step 5: Solve for x
    x = 55,641,810.26/11,121.20
  6. Step 6: Final answer
    x = 5,003.22

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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.