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Finding the Fourth Proportional to 28,797.87, 39,725.01 and 16,858.92

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Solution

The fourth proportional to 28,797.87, 39,725.01 and 16,858.92 is: 23,255.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,797.87 : 39,725.01 = 16,858.92 : x
  2. Step 2: Convert to fraction form
    28,797.87/39,725.01 = 16,858.92/x
  3. Step 3: Cross multiply
    28,797.87x = 39,725.01 × 16,858.92
  4. Step 4: Simplify right side
    28,797.87x = 669,720,765.59
  5. Step 5: Solve for x
    x = 669,720,765.59/28,797.87
  6. Step 6: Final answer
    x = 23,255.91

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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.