Home / 21,185.96-29,236.56-11,755.40

Finding the Fourth Proportional to 21,185.96, 29,236.56 and 11,755.40

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Solution

The fourth proportional to 21,185.96, 29,236.56 and 11,755.40 is: 16,222.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,185.96 : 29,236.56 = 11,755.40 : x
  2. Step 2: Convert to fraction form
    21,185.96/29,236.56 = 11,755.40/x
  3. Step 3: Cross multiply
    21,185.96x = 29,236.56 × 11,755.40
  4. Step 4: Simplify right side
    21,185.96x = 343,687,457.42
  5. Step 5: Solve for x
    x = 343,687,457.42/21,185.96
  6. Step 6: Final answer
    x = 16,222.42

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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.