Home / 21,189.09-29,242.32-11,757.66

Finding the Fourth Proportional to 21,189.09, 29,242.32 and 11,757.66

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Solution

The fourth proportional to 21,189.09, 29,242.32 and 11,757.66 is: 16,226.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,189.09 : 29,242.32 = 11,757.66 : x
  2. Step 2: Convert to fraction form
    21,189.09/29,242.32 = 11,757.66/x
  3. Step 3: Cross multiply
    21,189.09x = 29,242.32 × 11,757.66
  4. Step 4: Simplify right side
    21,189.09x = 343,821,102.42
  5. Step 5: Solve for x
    x = 343,821,102.42/21,189.09
  6. Step 6: Final answer
    x = 16,226.32

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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.