Home / 20,960.96-31,413.66-15,388.25

Finding the Fourth Proportional to 20,960.96, 31,413.66 and 15,388.25

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Solution

The fourth proportional to 20,960.96, 31,413.66 and 15,388.25 is: 23,061.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,960.96 : 31,413.66 = 15,388.25 : x
  2. Step 2: Convert to fraction form
    20,960.96/31,413.66 = 15,388.25/x
  3. Step 3: Cross multiply
    20,960.96x = 31,413.66 × 15,388.25
  4. Step 4: Simplify right side
    20,960.96x = 483,401,253.50
  5. Step 5: Solve for x
    x = 483,401,253.50/20,960.96
  6. Step 6: Final answer
    x = 23,061.98

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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.