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Finding the Fourth Proportional to 17,911.80, 26,858.10 and 7,511.80

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Solution

The fourth proportional to 17,911.80, 26,858.10 and 7,511.80 is: 11,263.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,911.80 : 26,858.10 = 7,511.80 : x
  2. Step 2: Convert to fraction form
    17,911.80/26,858.10 = 7,511.80/x
  3. Step 3: Cross multiply
    17,911.80x = 26,858.10 × 7,511.80
  4. Step 4: Simplify right side
    17,911.80x = 201,752,675.58
  5. Step 5: Solve for x
    x = 201,752,675.58/17,911.80
  6. Step 6: Final answer
    x = 11,263.67

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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.