Home / 21,324.75-29,428.16-11,893.32

Finding the Fourth Proportional to 21,324.75, 29,428.16 and 11,893.32

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Solution

The fourth proportional to 21,324.75, 29,428.16 and 11,893.32 is: 16,412.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,324.75 : 29,428.16 = 11,893.32 : x
  2. Step 2: Convert to fraction form
    21,324.75/29,428.16 = 11,893.32/x
  3. Step 3: Cross multiply
    21,324.75x = 29,428.16 × 11,893.32
  4. Step 4: Simplify right side
    21,324.75x = 349,998,464.42
  5. Step 5: Solve for x
    x = 349,998,464.42/21,324.75
  6. Step 6: Final answer
    x = 16,412.78

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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.