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Finding the Fourth Proportional to 17,911.36, 26,878.74 and 6,818.14

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Solution

The fourth proportional to 17,911.36, 26,878.74 and 6,818.14 is: 10,231.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,911.36 : 26,878.74 = 6,818.14 : x
  2. Step 2: Convert to fraction form
    17,911.36/26,878.74 = 6,818.14/x
  3. Step 3: Cross multiply
    17,911.36x = 26,878.74 × 6,818.14
  4. Step 4: Simplify right side
    17,911.36x = 183,263,120.22
  5. Step 5: Solve for x
    x = 183,263,120.22/17,911.36
  6. Step 6: Final answer
    x = 10,231.67

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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.