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Finding the Fourth Proportional to 23,645.62, 32,630.50 and 12,890.60

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Solution

The fourth proportional to 23,645.62, 32,630.50 and 12,890.60 is: 17,788.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,645.62 : 32,630.50 = 12,890.60 : x
  2. Step 2: Convert to fraction form
    23,645.62/32,630.50 = 12,890.60/x
  3. Step 3: Cross multiply
    23,645.62x = 32,630.50 × 12,890.60
  4. Step 4: Simplify right side
    23,645.62x = 420,626,723.30
  5. Step 5: Solve for x
    x = 420,626,723.30/23,645.62
  6. Step 6: Final answer
    x = 17,788.78

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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.