Home / 13,181.20-19,765.40-7,331.60

Finding the Fourth Proportional to 13,181.20, 19,765.40 and 7,331.60

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Solution

The fourth proportional to 13,181.20, 19,765.40 and 7,331.60 is: 10,993.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,181.20 : 19,765.40 = 7,331.60 : x
  2. Step 2: Convert to fraction form
    13,181.20/19,765.40 = 7,331.60/x
  3. Step 3: Cross multiply
    13,181.20x = 19,765.40 × 7,331.60
  4. Step 4: Simplify right side
    13,181.20x = 144,912,006.64
  5. Step 5: Solve for x
    x = 144,912,006.64/13,181.20
  6. Step 6: Final answer
    x = 10,993.84

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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.