Home / 19,447.12-29,126.90-13,629.70

Finding the Fourth Proportional to 19,447.12, 29,126.90 and 13,629.70

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Solution

The fourth proportional to 19,447.12, 29,126.90 and 13,629.70 is: 20,413.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,447.12 : 29,126.90 = 13,629.70 : x
  2. Step 2: Convert to fraction form
    19,447.12/29,126.90 = 13,629.70/x
  3. Step 3: Cross multiply
    19,447.12x = 29,126.90 × 13,629.70
  4. Step 4: Simplify right side
    19,447.12x = 396,990,908.93
  5. Step 5: Solve for x
    x = 396,990,908.93/19,447.12
  6. Step 6: Final answer
    x = 20,413.87

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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.