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Finding the Fourth Proportional to 28,874.85, 39,847.95 and 16,946.79

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Solution

The fourth proportional to 28,874.85, 39,847.95 and 16,946.79 is: 23,386.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,874.85 : 39,847.95 = 16,946.79 : x
  2. Step 2: Convert to fraction form
    28,874.85/39,847.95 = 16,946.79/x
  3. Step 3: Cross multiply
    28,874.85x = 39,847.95 × 16,946.79
  4. Step 4: Simplify right side
    28,874.85x = 675,294,840.58
  5. Step 5: Solve for x
    x = 675,294,840.58/28,874.85
  6. Step 6: Final answer
    x = 23,386.96

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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.