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Finding the Fourth Proportional to 23,489.60, 35,209.88 and 12,408.80

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Solution

The fourth proportional to 23,489.60, 35,209.88 and 12,408.80 is: 18,600.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,489.60 : 35,209.88 = 12,408.80 : x
  2. Step 2: Convert to fraction form
    23,489.60/35,209.88 = 12,408.80/x
  3. Step 3: Cross multiply
    23,489.60x = 35,209.88 × 12,408.80
  4. Step 4: Simplify right side
    23,489.60x = 436,912,358.94
  5. Step 5: Solve for x
    x = 436,912,358.94/23,489.60
  6. Step 6: Final answer
    x = 18,600.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.