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Finding the Fourth Proportional to 18,803.54, 28,202.90 and 8,949.08

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Solution

The fourth proportional to 18,803.54, 28,202.90 and 8,949.08 is: 13,422.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,803.54 : 28,202.90 = 8,949.08 : x
  2. Step 2: Convert to fraction form
    18,803.54/28,202.90 = 8,949.08/x
  3. Step 3: Cross multiply
    18,803.54x = 28,202.90 × 8,949.08
  4. Step 4: Simplify right side
    18,803.54x = 252,389,822.57
  5. Step 5: Solve for x
    x = 252,389,822.57/18,803.54
  6. Step 6: Final answer
    x = 13,422.47

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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.