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Finding the Fourth Proportional to 11,860.90, 16,366.34 and 6,823.19

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Solution

The fourth proportional to 11,860.90, 16,366.34 and 6,823.19 is: 9,415.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,860.90 : 16,366.34 = 6,823.19 : x
  2. Step 2: Convert to fraction form
    11,860.90/16,366.34 = 6,823.19/x
  3. Step 3: Cross multiply
    11,860.90x = 16,366.34 × 6,823.19
  4. Step 4: Simplify right side
    11,860.90x = 111,670,705.40
  5. Step 5: Solve for x
    x = 111,670,705.40/11,860.90
  6. Step 6: Final answer
    x = 9,415.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.