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Finding the Fourth Proportional to 18,941.12, 28,410.90 and 7,253.64

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Solution

The fourth proportional to 18,941.12, 28,410.90 and 7,253.64 is: 10,880.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,941.12 : 28,410.90 = 7,253.64 : x
  2. Step 2: Convert to fraction form
    18,941.12/28,410.90 = 7,253.64/x
  3. Step 3: Cross multiply
    18,941.12x = 28,410.90 × 7,253.64
  4. Step 4: Simplify right side
    18,941.12x = 206,082,440.68
  5. Step 5: Solve for x
    x = 206,082,440.68/18,941.12
  6. Step 6: Final answer
    x = 10,880.16

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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.