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Finding the Fourth Proportional to 18,674.20, 28,035.60 and 14,980.60

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Solution

The fourth proportional to 18,674.20, 28,035.60 and 14,980.60 is: 22,490.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,674.20 : 28,035.60 = 14,980.60 : x
  2. Step 2: Convert to fraction form
    18,674.20/28,035.60 = 14,980.60/x
  3. Step 3: Cross multiply
    18,674.20x = 28,035.60 × 14,980.60
  4. Step 4: Simplify right side
    18,674.20x = 419,990,109.36
  5. Step 5: Solve for x
    x = 419,990,109.36/18,674.20
  6. Step 6: Final answer
    x = 22,490.39

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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.