Home / 11,364.78-15,679.80-6,647.34

Finding the Fourth Proportional to 11,364.78, 15,679.80 and 6,647.34

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Solution

The fourth proportional to 11,364.78, 15,679.80 and 6,647.34 is: 9,171.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,364.78 : 15,679.80 = 6,647.34 : x
  2. Step 2: Convert to fraction form
    11,364.78/15,679.80 = 6,647.34/x
  3. Step 3: Cross multiply
    11,364.78x = 15,679.80 × 6,647.34
  4. Step 4: Simplify right side
    11,364.78x = 104,228,961.73
  5. Step 5: Solve for x
    x = 104,228,961.73/11,364.78
  6. Step 6: Final answer
    x = 9,171.23

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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.