Home / 21,099.70-29,118.48-11,668.25

Finding the Fourth Proportional to 21,099.70, 29,118.48 and 11,668.25

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Solution

The fourth proportional to 21,099.70, 29,118.48 and 11,668.25 is: 16,102.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,099.70 : 29,118.48 = 11,668.25 : x
  2. Step 2: Convert to fraction form
    21,099.70/29,118.48 = 11,668.25/x
  3. Step 3: Cross multiply
    21,099.70x = 29,118.48 × 11,668.25
  4. Step 4: Simplify right side
    21,099.70x = 339,761,704.26
  5. Step 5: Solve for x
    x = 339,761,704.26/21,099.70
  6. Step 6: Final answer
    x = 16,102.68

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1.5x scale

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.