Home / 20,927.97-31,413.83-13,142.25

Finding the Fourth Proportional to 20,927.97, 31,413.83 and 13,142.25

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Solution

The fourth proportional to 20,927.97, 31,413.83 and 13,142.25 is: 19,727.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,927.97 : 31,413.83 = 13,142.25 : x
  2. Step 2: Convert to fraction form
    20,927.97/31,413.83 = 13,142.25/x
  3. Step 3: Cross multiply
    20,927.97x = 31,413.83 × 13,142.25
  4. Step 4: Simplify right side
    20,927.97x = 412,848,341.61
  5. Step 5: Solve for x
    x = 412,848,341.61/20,927.97
  6. Step 6: Final answer
    x = 19,727.11

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1.5x scale

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.