Home / 21,249.89-29,325.40-11,690.02

Finding the Fourth Proportional to 21,249.89, 29,325.40 and 11,690.02

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Solution

The fourth proportional to 21,249.89, 29,325.40 and 11,690.02 is: 16,132.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,249.89 : 29,325.40 = 11,690.02 : x
  2. Step 2: Convert to fraction form
    21,249.89/29,325.40 = 11,690.02/x
  3. Step 3: Cross multiply
    21,249.89x = 29,325.40 × 11,690.02
  4. Step 4: Simplify right side
    21,249.89x = 342,814,519.94
  5. Step 5: Solve for x
    x = 342,814,519.94/21,249.89
  6. Step 6: Final answer
    x = 16,132.53

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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.