Home / 21,099.76-29,116.74-11,668.12

Finding the Fourth Proportional to 21,099.76, 29,116.74 and 11,668.12

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Solution

The fourth proportional to 21,099.76, 29,116.74 and 11,668.12 is: 16,101.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,099.76 : 29,116.74 = 11,668.12 : x
  2. Step 2: Convert to fraction form
    21,099.76/29,116.74 = 11,668.12/x
  3. Step 3: Cross multiply
    21,099.76x = 29,116.74 × 11,668.12
  4. Step 4: Simplify right side
    21,099.76x = 339,737,616.33
  5. Step 5: Solve for x
    x = 339,737,616.33/21,099.76
  6. Step 6: Final answer
    x = 16,101.49

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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.