Home / 13,381.68-18,467.76-7,413.90

Finding the Fourth Proportional to 13,381.68, 18,467.76 and 7,413.90

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Solution

The fourth proportional to 13,381.68, 18,467.76 and 7,413.90 is: 10,231.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,381.68 : 18,467.76 = 7,413.90 : x
  2. Step 2: Convert to fraction form
    13,381.68/18,467.76 = 7,413.90/x
  3. Step 3: Cross multiply
    13,381.68x = 18,467.76 × 7,413.90
  4. Step 4: Simplify right side
    13,381.68x = 136,918,125.86
  5. Step 5: Solve for x
    x = 136,918,125.86/13,381.68
  6. Step 6: Final answer
    x = 10,231.76

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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.