Home / 13,470.10-20,138.63-11,413.10

Finding the Fourth Proportional to 13,470.10, 20,138.63 and 11,413.10

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Solution

The fourth proportional to 13,470.10, 20,138.63 and 11,413.10 is: 17,063.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,470.10 : 20,138.63 = 11,413.10 : x
  2. Step 2: Convert to fraction form
    13,470.10/20,138.63 = 11,413.10/x
  3. Step 3: Cross multiply
    13,470.10x = 20,138.63 × 11,413.10
  4. Step 4: Simplify right side
    13,470.10x = 229,844,191.33
  5. Step 5: Solve for x
    x = 229,844,191.33/13,470.10
  6. Step 6: Final answer
    x = 17,063.29

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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.