Home / 21,187.26-29,231.73-12,233.58

Finding the Fourth Proportional to 21,187.26, 29,231.73 and 12,233.58

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Solution

The fourth proportional to 21,187.26, 29,231.73 and 12,233.58 is: 16,878.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,187.26 : 29,231.73 = 12,233.58 : x
  2. Step 2: Convert to fraction form
    21,187.26/29,231.73 = 12,233.58/x
  3. Step 3: Cross multiply
    21,187.26x = 29,231.73 × 12,233.58
  4. Step 4: Simplify right side
    21,187.26x = 357,608,707.49
  5. Step 5: Solve for x
    x = 357,608,707.49/21,187.26
  6. Step 6: Final answer
    x = 16,878.48

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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.