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Finding the Fourth Proportional to 18,850.60, 28,259.70 and 9,616.60

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Solution

The fourth proportional to 18,850.60, 28,259.70 and 9,616.60 is: 14,416.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,850.60 : 28,259.70 = 9,616.60 : x
  2. Step 2: Convert to fraction form
    18,850.60/28,259.70 = 9,616.60/x
  3. Step 3: Cross multiply
    18,850.60x = 28,259.70 × 9,616.60
  4. Step 4: Simplify right side
    18,850.60x = 271,762,231.02
  5. Step 5: Solve for x
    x = 271,762,231.02/18,850.60
  6. Step 6: Final answer
    x = 14,416.64

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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.