Home / 13,413.17-18,507.48-8,108.29

Finding the Fourth Proportional to 13,413.17, 18,507.48 and 8,108.29

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Solution

The fourth proportional to 13,413.17, 18,507.48 and 8,108.29 is: 11,187.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,413.17 : 18,507.48 = 8,108.29 : x
  2. Step 2: Convert to fraction form
    13,413.17/18,507.48 = 8,108.29/x
  3. Step 3: Cross multiply
    13,413.17x = 18,507.48 × 8,108.29
  4. Step 4: Simplify right side
    13,413.17x = 150,064,015.01
  5. Step 5: Solve for x
    x = 150,064,015.01/13,413.17
  6. Step 6: Final answer
    x = 11,187.81

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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.