Home / 21,185.53-29,232.70-12,231.34

Finding the Fourth Proportional to 21,185.53, 29,232.70 and 12,231.34

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Solution

The fourth proportional to 21,185.53, 29,232.70 and 12,231.34 is: 16,877.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,185.53 : 29,232.70 = 12,231.34 : x
  2. Step 2: Convert to fraction form
    21,185.53/29,232.70 = 12,231.34/x
  3. Step 3: Cross multiply
    21,185.53x = 29,232.70 × 12,231.34
  4. Step 4: Simplify right side
    21,185.53x = 357,555,092.82
  5. Step 5: Solve for x
    x = 357,555,092.82/21,185.53
  6. Step 6: Final answer
    x = 16,877.33

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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.