Home / 13,787.97-19,027.36-7,820.80

Finding the Fourth Proportional to 13,787.97, 19,027.36 and 7,820.80

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Solution

The fourth proportional to 13,787.97, 19,027.36 and 7,820.80 is: 10,792.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,787.97 : 19,027.36 = 7,820.80 : x
  2. Step 2: Convert to fraction form
    13,787.97/19,027.36 = 7,820.80/x
  3. Step 3: Cross multiply
    13,787.97x = 19,027.36 × 7,820.80
  4. Step 4: Simplify right side
    13,787.97x = 148,809,202.33
  5. Step 5: Solve for x
    x = 148,809,202.33/13,787.97
  6. Step 6: Final answer
    x = 10,792.68

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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.