Home / 11,967.40-17,915.19-7,272.91

Finding the Fourth Proportional to 11,967.40, 17,915.19 and 7,272.91

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Solution

The fourth proportional to 11,967.40, 17,915.19 and 7,272.91 is: 10,887.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,967.40 : 17,915.19 = 7,272.91 : x
  2. Step 2: Convert to fraction form
    11,967.40/17,915.19 = 7,272.91/x
  3. Step 3: Cross multiply
    11,967.40x = 17,915.19 × 7,272.91
  4. Step 4: Simplify right side
    11,967.40x = 130,295,564.50
  5. Step 5: Solve for x
    x = 130,295,564.50/11,967.40
  6. Step 6: Final answer
    x = 10,887.54

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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.