Home / 11,170.56-15,405.48-8,511.60

Finding the Fourth Proportional to 11,170.56, 15,405.48 and 8,511.60

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Solution

The fourth proportional to 11,170.56, 15,405.48 and 8,511.60 is: 11,738.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,170.56 : 15,405.48 = 8,511.60 : x
  2. Step 2: Convert to fraction form
    11,170.56/15,405.48 = 8,511.60/x
  3. Step 3: Cross multiply
    11,170.56x = 15,405.48 × 8,511.60
  4. Step 4: Simplify right side
    11,170.56x = 131,125,283.57
  5. Step 5: Solve for x
    x = 131,125,283.57/11,170.56
  6. Step 6: Final answer
    x = 11,738.47

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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.