Home / 11,921.40-16,450.62-6,883.32

Finding the Fourth Proportional to 11,921.40, 16,450.62 and 6,883.32

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Solution

The fourth proportional to 11,921.40, 16,450.62 and 6,883.32 is: 9,498.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,921.40 : 16,450.62 = 6,883.32 : x
  2. Step 2: Convert to fraction form
    11,921.40/16,450.62 = 6,883.32/x
  3. Step 3: Cross multiply
    11,921.40x = 16,450.62 × 6,883.32
  4. Step 4: Simplify right side
    11,921.40x = 113,234,881.66
  5. Step 5: Solve for x
    x = 113,234,881.66/11,921.40
  6. Step 6: Final answer
    x = 9,498.46

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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.