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Finding the Fourth Proportional to 28,371, 39,152.25 and 15,796.02

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Solution

The fourth proportional to 28,371, 39,152.25 and 15,796.02 is: 21,798.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,371 : 39,152.25 = 15,796.02 : x
  2. Step 2: Convert to fraction form
    28,371/39,152.25 = 15,796.02/x
  3. Step 3: Cross multiply
    28,371x = 39,152.25 × 15,796.02
  4. Step 4: Simplify right side
    28,371x = 618,449,724.05
  5. Step 5: Solve for x
    x = 618,449,724.05/28,371
  6. Step 6: Final answer
    x = 21,798.66

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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.