Home / 11,362.84-15,679.60-8,380.28

Finding the Fourth Proportional to 11,362.84, 15,679.60 and 8,380.28

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Solution

The fourth proportional to 11,362.84, 15,679.60 and 8,380.28 is: 11,563.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,362.84 : 15,679.60 = 8,380.28 : x
  2. Step 2: Convert to fraction form
    11,362.84/15,679.60 = 8,380.28/x
  3. Step 3: Cross multiply
    11,362.84x = 15,679.60 × 8,380.28
  4. Step 4: Simplify right side
    11,362.84x = 131,399,438.29
  5. Step 5: Solve for x
    x = 131,399,438.29/11,362.84
  6. Step 6: Final answer
    x = 11,563.96

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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.