Home / 21,350.86-29,461.44-11,919.82

Finding the Fourth Proportional to 21,350.86, 29,461.44 and 11,919.82

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Solution

The fourth proportional to 21,350.86, 29,461.44 and 11,919.82 is: 16,447.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,350.86 : 29,461.44 = 11,919.82 : x
  2. Step 2: Convert to fraction form
    21,350.86/29,461.44 = 11,919.82/x
  3. Step 3: Cross multiply
    21,350.86x = 29,461.44 × 11,919.82
  4. Step 4: Simplify right side
    21,350.86x = 351,175,061.74
  5. Step 5: Solve for x
    x = 351,175,061.74/21,350.86
  6. Step 6: Final answer
    x = 16,447.82

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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.