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Finding the Fourth Proportional to 28,333, 39,099.54 and 15,757.48

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Solution

The fourth proportional to 28,333, 39,099.54 and 15,757.48 is: 21,745.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,333 : 39,099.54 = 15,757.48 : x
  2. Step 2: Convert to fraction form
    28,333/39,099.54 = 15,757.48/x
  3. Step 3: Cross multiply
    28,333x = 39,099.54 × 15,757.48
  4. Step 4: Simplify right side
    28,333x = 616,110,219.56
  5. Step 5: Solve for x
    x = 616,110,219.56/28,333
  6. Step 6: Final answer
    x = 21,745.32

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1.5x scale

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.