Home / 19,860.51-29,786.23-11,857.54

Finding the Fourth Proportional to 19,860.51, 29,786.23 and 11,857.54

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Solution

The fourth proportional to 19,860.51, 29,786.23 and 11,857.54 is: 17,783.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,860.51 : 29,786.23 = 11,857.54 : x
  2. Step 2: Convert to fraction form
    19,860.51/29,786.23 = 11,857.54/x
  3. Step 3: Cross multiply
    19,860.51x = 29,786.23 × 11,857.54
  4. Step 4: Simplify right side
    19,860.51x = 353,191,413.67
  5. Step 5: Solve for x
    x = 353,191,413.67/19,860.51
  6. Step 6: Final answer
    x = 17,783.60

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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.