Home / 18,691.36-28,028.32-6,997.12

Finding the Fourth Proportional to 18,691.36, 28,028.32 and 6,997.12

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Solution

The fourth proportional to 18,691.36, 28,028.32 and 6,997.12 is: 10,492.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,691.36 : 28,028.32 = 6,997.12 : x
  2. Step 2: Convert to fraction form
    18,691.36/28,028.32 = 6,997.12/x
  3. Step 3: Cross multiply
    18,691.36x = 28,028.32 × 6,997.12
  4. Step 4: Simplify right side
    18,691.36x = 196,117,518.44
  5. Step 5: Solve for x
    x = 196,117,518.44/18,691.36
  6. Step 6: Final answer
    x = 10,492.42

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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.