Home / 13,381.67-18,467.75-7,413.91

Finding the Fourth Proportional to 13,381.67, 18,467.75 and 7,413.91

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Solution

The fourth proportional to 13,381.67, 18,467.75 and 7,413.91 is: 10,231.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,381.67 : 18,467.75 = 7,413.91 : x
  2. Step 2: Convert to fraction form
    13,381.67/18,467.75 = 7,413.91/x
  3. Step 3: Cross multiply
    13,381.67x = 18,467.75 × 7,413.91
  4. Step 4: Simplify right side
    13,381.67x = 136,918,236.40
  5. Step 5: Solve for x
    x = 136,918,236.40/13,381.67
  6. Step 6: Final answer
    x = 10,231.77

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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.