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Finding the Fourth Proportional to 11,878.25, 17,821.67 and 5,558.67

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Solution

The fourth proportional to 11,878.25, 17,821.67 and 5,558.67 is: 8,340.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,878.25 : 17,821.67 = 5,558.67 : x
  2. Step 2: Convert to fraction form
    11,878.25/17,821.67 = 5,558.67/x
  3. Step 3: Cross multiply
    11,878.25x = 17,821.67 × 5,558.67
  4. Step 4: Simplify right side
    11,878.25x = 99,064,754.59
  5. Step 5: Solve for x
    x = 99,064,754.59/11,878.25
  6. Step 6: Final answer
    x = 8,340.02

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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.