Home / 13,899.78-19,181.91-7,611.75

Finding the Fourth Proportional to 13,899.78, 19,181.91 and 7,611.75

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Solution

The fourth proportional to 13,899.78, 19,181.91 and 7,611.75 is: 10,504.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,899.78 : 19,181.91 = 7,611.75 : x
  2. Step 2: Convert to fraction form
    13,899.78/19,181.91 = 7,611.75/x
  3. Step 3: Cross multiply
    13,899.78x = 19,181.91 × 7,611.75
  4. Step 4: Simplify right side
    13,899.78x = 146,007,903.44
  5. Step 5: Solve for x
    x = 146,007,903.44/13,899.78
  6. Step 6: Final answer
    x = 10,504.33

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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.