Home / 13,214.72-19,825.44-3,980.48

Finding the Fourth Proportional to 13,214.72, 19,825.44 and 3,980.48

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Solution

The fourth proportional to 13,214.72, 19,825.44 and 3,980.48 is: 5,971.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,214.72 : 19,825.44 = 3,980.48 : x
  2. Step 2: Convert to fraction form
    13,214.72/19,825.44 = 3,980.48/x
  3. Step 3: Cross multiply
    13,214.72x = 19,825.44 × 3,980.48
  4. Step 4: Simplify right side
    13,214.72x = 78,914,767.41
  5. Step 5: Solve for x
    x = 78,914,767.41/13,214.72
  6. Step 6: Final answer
    x = 5,971.73

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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.