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Finding the Fourth Proportional to 18,989.22, 26,200.47 and 11,824.77

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Solution

The fourth proportional to 18,989.22, 26,200.47 and 11,824.77 is: 16,315.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,989.22 : 26,200.47 = 11,824.77 : x
  2. Step 2: Convert to fraction form
    18,989.22/26,200.47 = 11,824.77/x
  3. Step 3: Cross multiply
    18,989.22x = 26,200.47 × 11,824.77
  4. Step 4: Simplify right side
    18,989.22x = 309,814,531.64
  5. Step 5: Solve for x
    x = 309,814,531.64/18,989.22
  6. Step 6: Final answer
    x = 16,315.28

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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.