Home / 21,189.75-29,242.04-11,758.29

Finding the Fourth Proportional to 21,189.75, 29,242.04 and 11,758.29

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Solution

The fourth proportional to 21,189.75, 29,242.04 and 11,758.29 is: 16,226.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,189.75 : 29,242.04 = 11,758.29 : x
  2. Step 2: Convert to fraction form
    21,189.75/29,242.04 = 11,758.29/x
  3. Step 3: Cross multiply
    21,189.75x = 29,242.04 × 11,758.29
  4. Step 4: Simplify right side
    21,189.75x = 343,836,327.72
  5. Step 5: Solve for x
    x = 343,836,327.72/21,189.75
  6. Step 6: Final answer
    x = 16,226.54

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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.