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Finding the Fourth Proportional to 28,838.30, 39,790.04 and 16,260.62

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Solution

The fourth proportional to 28,838.30, 39,790.04 and 16,260.62 is: 22,435.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,838.30 : 39,790.04 = 16,260.62 : x
  2. Step 2: Convert to fraction form
    28,838.30/39,790.04 = 16,260.62/x
  3. Step 3: Cross multiply
    28,838.30x = 39,790.04 × 16,260.62
  4. Step 4: Simplify right side
    28,838.30x = 647,010,720.22
  5. Step 5: Solve for x
    x = 647,010,720.22/28,838.30
  6. Step 6: Final answer
    x = 22,435.81

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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.