Home / 20,364.21-28,102.95-11,413.71

Finding the Fourth Proportional to 20,364.21, 28,102.95 and 11,413.71

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Solution

The fourth proportional to 20,364.21, 28,102.95 and 11,413.71 is: 15,751.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,364.21 : 28,102.95 = 11,413.71 : x
  2. Step 2: Convert to fraction form
    20,364.21/28,102.95 = 11,413.71/x
  3. Step 3: Cross multiply
    20,364.21x = 28,102.95 × 11,413.71
  4. Step 4: Simplify right side
    20,364.21x = 320,758,921.44
  5. Step 5: Solve for x
    x = 320,758,921.44/20,364.21
  6. Step 6: Final answer
    x = 15,751.11

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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.