Home / 13,949.20-19,248.36-7,982.48

Finding the Fourth Proportional to 13,949.20, 19,248.36 and 7,982.48

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Solution

The fourth proportional to 13,949.20, 19,248.36 and 7,982.48 is: 11,014.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,949.20 : 19,248.36 = 7,982.48 : x
  2. Step 2: Convert to fraction form
    13,949.20/19,248.36 = 7,982.48/x
  3. Step 3: Cross multiply
    13,949.20x = 19,248.36 × 7,982.48
  4. Step 4: Simplify right side
    13,949.20x = 153,649,648.73
  5. Step 5: Solve for x
    x = 153,649,648.73/13,949.20
  6. Step 6: Final answer
    x = 11,014.94

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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.