Home / 13,860.44-19,120.55-9,828.12

Finding the Fourth Proportional to 13,860.44, 19,120.55 and 9,828.12

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Solution

The fourth proportional to 13,860.44, 19,120.55 and 9,828.12 is: 13,557.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,860.44 : 19,120.55 = 9,828.12 : x
  2. Step 2: Convert to fraction form
    13,860.44/19,120.55 = 9,828.12/x
  3. Step 3: Cross multiply
    13,860.44x = 19,120.55 × 9,828.12
  4. Step 4: Simplify right side
    13,860.44x = 187,919,059.87
  5. Step 5: Solve for x
    x = 187,919,059.87/13,860.44
  6. Step 6: Final answer
    x = 13,557.94

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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.