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Finding the Fourth Proportional to 18,843.36, 28,242.36 and 7,735.02

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Solution

The fourth proportional to 18,843.36, 28,242.36 and 7,735.02 is: 11,593.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,843.36 : 28,242.36 = 7,735.02 : x
  2. Step 2: Convert to fraction form
    18,843.36/28,242.36 = 7,735.02/x
  3. Step 3: Cross multiply
    18,843.36x = 28,242.36 × 7,735.02
  4. Step 4: Simplify right side
    18,843.36x = 218,455,219.45
  5. Step 5: Solve for x
    x = 218,455,219.45/18,843.36
  6. Step 6: Final answer
    x = 11,593.22

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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.