Home / 11,584.36-15,990.30-7,222

Finding the Fourth Proportional to 11,584.36, 15,990.30 and 7,222

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Solution

The fourth proportional to 11,584.36, 15,990.30 and 7,222 is: 9,968.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,584.36 : 15,990.30 = 7,222 : x
  2. Step 2: Convert to fraction form
    11,584.36/15,990.30 = 7,222/x
  3. Step 3: Cross multiply
    11,584.36x = 15,990.30 × 7,222
  4. Step 4: Simplify right side
    11,584.36x = 115,481,946.60
  5. Step 5: Solve for x
    x = 115,481,946.60/11,584.36
  6. Step 6: Final answer
    x = 9,968.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.