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Finding the Fourth Proportional to 28,936, 43,388.36 and 15,616.16

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Solution

The fourth proportional to 28,936, 43,388.36 and 15,616.16 is: 23,415.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,936 : 43,388.36 = 15,616.16 : x
  2. Step 2: Convert to fraction form
    28,936/43,388.36 = 15,616.16/x
  3. Step 3: Cross multiply
    28,936x = 43,388.36 × 15,616.16
  4. Step 4: Simplify right side
    28,936x = 677,559,571.90
  5. Step 5: Solve for x
    x = 677,559,571.90/28,936
  6. Step 6: Final answer
    x = 23,415.80

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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.