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Finding the Fourth Proportional to 28,741, 39,664.86 and 16,166.68

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Solution

The fourth proportional to 28,741, 39,664.86 and 16,166.68 is: 22,311.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,741 : 39,664.86 = 16,166.68 : x
  2. Step 2: Convert to fraction form
    28,741/39,664.86 = 16,166.68/x
  3. Step 3: Cross multiply
    28,741x = 39,664.86 × 16,166.68
  4. Step 4: Simplify right side
    28,741x = 641,249,098.86
  5. Step 5: Solve for x
    x = 641,249,098.86/28,741
  6. Step 6: Final answer
    x = 22,311.30

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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.