Home / 21,186.98-29,241.54-11,758.58

Finding the Fourth Proportional to 21,186.98, 29,241.54 and 11,758.58

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Solution

The fourth proportional to 21,186.98, 29,241.54 and 11,758.58 is: 16,228.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,186.98 : 29,241.54 = 11,758.58 : x
  2. Step 2: Convert to fraction form
    21,186.98/29,241.54 = 11,758.58/x
  3. Step 3: Cross multiply
    21,186.98x = 29,241.54 × 11,758.58
  4. Step 4: Simplify right side
    21,186.98x = 343,838,987.41
  5. Step 5: Solve for x
    x = 343,838,987.41/21,186.98
  6. Step 6: Final answer
    x = 16,228.79

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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.