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Finding the Fourth Proportional to 11,920.67, 17,867.89 and 6,360.22

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Solution

The fourth proportional to 11,920.67, 17,867.89 and 6,360.22 is: 9,533.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,920.67 : 17,867.89 = 6,360.22 : x
  2. Step 2: Convert to fraction form
    11,920.67/17,867.89 = 6,360.22/x
  3. Step 3: Cross multiply
    11,920.67x = 17,867.89 × 6,360.22
  4. Step 4: Simplify right side
    11,920.67x = 113,643,741.62
  5. Step 5: Solve for x
    x = 113,643,741.62/11,920.67
  6. Step 6: Final answer
    x = 9,533.34

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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.