Home / 28,781.64-43,178.94-11,256.48

Finding the Fourth Proportional to 28,781.64, 43,178.94 and 11,256.48

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Solution

The fourth proportional to 28,781.64, 43,178.94 and 11,256.48 is: 16,887.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,781.64 : 43,178.94 = 11,256.48 : x
  2. Step 2: Convert to fraction form
    28,781.64/43,178.94 = 11,256.48/x
  3. Step 3: Cross multiply
    28,781.64x = 43,178.94 × 11,256.48
  4. Step 4: Simplify right side
    28,781.64x = 486,042,874.53
  5. Step 5: Solve for x
    x = 486,042,874.53/28,781.64
  6. Step 6: Final answer
    x = 16,887.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.