Home / 21,383.36-29,493.30-15,716.19

Finding the Fourth Proportional to 21,383.36, 29,493.30 and 15,716.19

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Solution

The fourth proportional to 21,383.36, 29,493.30 and 15,716.19 is: 21,676.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,383.36 : 29,493.30 = 15,716.19 : x
  2. Step 2: Convert to fraction form
    21,383.36/29,493.30 = 15,716.19/x
  3. Step 3: Cross multiply
    21,383.36x = 29,493.30 × 15,716.19
  4. Step 4: Simplify right side
    21,383.36x = 463,522,227.95
  5. Step 5: Solve for x
    x = 463,522,227.95/21,383.36
  6. Step 6: Final answer
    x = 21,676.78

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Half scale
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Double scale
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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.