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Finding the Fourth Proportional to 28,797.64, 39,748.16 and 18,751.16

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Solution

The fourth proportional to 28,797.64, 39,748.16 and 18,751.16 is: 25,881.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,797.64 : 39,748.16 = 18,751.16 : x
  2. Step 2: Convert to fraction form
    28,797.64/39,748.16 = 18,751.16/x
  3. Step 3: Cross multiply
    28,797.64x = 39,748.16 × 18,751.16
  4. Step 4: Simplify right side
    28,797.64x = 745,324,107.87
  5. Step 5: Solve for x
    x = 745,324,107.87/28,797.64
  6. Step 6: Final answer
    x = 25,881.43

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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.