Home / 21,188.78-29,241.43-11,757.34

Finding the Fourth Proportional to 21,188.78, 29,241.43 and 11,757.34

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Solution

The fourth proportional to 21,188.78, 29,241.43 and 11,757.34 is: 16,225.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,188.78 : 29,241.43 = 11,757.34 : x
  2. Step 2: Convert to fraction form
    21,188.78/29,241.43 = 11,757.34/x
  3. Step 3: Cross multiply
    21,188.78x = 29,241.43 × 11,757.34
  4. Step 4: Simplify right side
    21,188.78x = 343,801,434.60
  5. Step 5: Solve for x
    x = 343,801,434.60/21,188.78
  6. Step 6: Final answer
    x = 16,225.64

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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.