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Finding the Fourth Proportional to 28,838.58, 39,797.74 and 16,905.30

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Solution

The fourth proportional to 28,838.58, 39,797.74 and 16,905.30 is: 23,329.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,838.58 : 39,797.74 = 16,905.30 : x
  2. Step 2: Convert to fraction form
    28,838.58/39,797.74 = 16,905.30/x
  3. Step 3: Cross multiply
    28,838.58x = 39,797.74 × 16,905.30
  4. Step 4: Simplify right side
    28,838.58x = 672,792,734.02
  5. Step 5: Solve for x
    x = 672,792,734.02/28,838.58
  6. Step 6: Final answer
    x = 23,329.61

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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.