Home / 21,183.33-29,231.82-12,230.28

Finding the Fourth Proportional to 21,183.33, 29,231.82 and 12,230.28

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Solution

The fourth proportional to 21,183.33, 29,231.82 and 12,230.28 is: 16,877.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,183.33 : 29,231.82 = 12,230.28 : x
  2. Step 2: Convert to fraction form
    21,183.33/29,231.82 = 12,230.28/x
  3. Step 3: Cross multiply
    21,183.33x = 29,231.82 × 12,230.28
  4. Step 4: Simplify right side
    21,183.33x = 357,513,343.51
  5. Step 5: Solve for x
    x = 357,513,343.51/21,183.33
  6. Step 6: Final answer
    x = 16,877.11

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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.