Home / 13,936.13-19,231.15-8,271.12

Finding the Fourth Proportional to 13,936.13, 19,231.15 and 8,271.12

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Solution

The fourth proportional to 13,936.13, 19,231.15 and 8,271.12 is: 11,413.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,936.13 : 19,231.15 = 8,271.12 : x
  2. Step 2: Convert to fraction form
    13,936.13/19,231.15 = 8,271.12/x
  3. Step 3: Cross multiply
    13,936.13x = 19,231.15 × 8,271.12
  4. Step 4: Simplify right side
    13,936.13x = 159,063,149.39
  5. Step 5: Solve for x
    x = 159,063,149.39/13,936.13
  6. Step 6: Final answer
    x = 11,413.72

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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.