Home / 19,413.36-29,120.04-12,881.28

Finding the Fourth Proportional to 19,413.36, 29,120.04 and 12,881.28

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Solution

The fourth proportional to 19,413.36, 29,120.04 and 12,881.28 is: 19,321.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,413.36 : 29,120.04 = 12,881.28 : x
  2. Step 2: Convert to fraction form
    19,413.36/29,120.04 = 12,881.28/x
  3. Step 3: Cross multiply
    19,413.36x = 29,120.04 × 12,881.28
  4. Step 4: Simplify right side
    19,413.36x = 375,103,388.85
  5. Step 5: Solve for x
    x = 375,103,388.85/19,413.36
  6. Step 6: Final answer
    x = 19,321.92

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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.