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Finding the Fourth Proportional to 28,764, 39,693.52 and 16,017.28

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Solution

The fourth proportional to 28,764, 39,693.52 and 16,017.28 is: 22,103.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,764 : 39,693.52 = 16,017.28 : x
  2. Step 2: Convert to fraction form
    28,764/39,693.52 = 16,017.28/x
  3. Step 3: Cross multiply
    28,764x = 39,693.52 × 16,017.28
  4. Step 4: Simplify right side
    28,764x = 635,782,224.03
  5. Step 5: Solve for x
    x = 635,782,224.03/28,764
  6. Step 6: Final answer
    x = 22,103.40

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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.