Home / 13,938.13-19,231.73-8,272.07

Finding the Fourth Proportional to 13,938.13, 19,231.73 and 8,272.07

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Solution

The fourth proportional to 13,938.13, 19,231.73 and 8,272.07 is: 11,413.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,938.13 : 19,231.73 = 8,272.07 : x
  2. Step 2: Convert to fraction form
    13,938.13/19,231.73 = 8,272.07/x
  3. Step 3: Cross multiply
    13,938.13x = 19,231.73 × 8,272.07
  4. Step 4: Simplify right side
    13,938.13x = 159,086,290.58
  5. Step 5: Solve for x
    x = 159,086,290.58/13,938.13
  6. Step 6: Final answer
    x = 11,413.75

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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.