Home / 21,101.40-29,115.72-11,668.14

Finding the Fourth Proportional to 21,101.40, 29,115.72 and 11,668.14

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Solution

The fourth proportional to 21,101.40, 29,115.72 and 11,668.14 is: 16,099.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,101.40 : 29,115.72 = 11,668.14 : x
  2. Step 2: Convert to fraction form
    21,101.40/29,115.72 = 11,668.14/x
  3. Step 3: Cross multiply
    21,101.40x = 29,115.72 × 11,668.14
  4. Step 4: Simplify right side
    21,101.40x = 339,726,297.16
  5. Step 5: Solve for x
    x = 339,726,297.16/21,101.40
  6. Step 6: Final answer
    x = 16,099.70

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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.