Home / 13,828.46-19,083.20-7,860.38

Finding the Fourth Proportional to 13,828.46, 19,083.20 and 7,860.38

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Solution

The fourth proportional to 13,828.46, 19,083.20 and 7,860.38 is: 10,847.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,828.46 : 19,083.20 = 7,860.38 : x
  2. Step 2: Convert to fraction form
    13,828.46/19,083.20 = 7,860.38/x
  3. Step 3: Cross multiply
    13,828.46x = 19,083.20 × 7,860.38
  4. Step 4: Simplify right side
    13,828.46x = 150,001,203.62
  5. Step 5: Solve for x
    x = 150,001,203.62/13,828.46
  6. Step 6: Final answer
    x = 10,847.28

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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.