Home / 27,989.21-38,626.86-15,413.96

Finding the Fourth Proportional to 27,989.21, 38,626.86 and 15,413.96

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Solution

The fourth proportional to 27,989.21, 38,626.86 and 15,413.96 is: 21,272.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,989.21 : 38,626.86 = 15,413.96 : x
  2. Step 2: Convert to fraction form
    27,989.21/38,626.86 = 15,413.96/x
  3. Step 3: Cross multiply
    27,989.21x = 38,626.86 × 15,413.96
  4. Step 4: Simplify right side
    27,989.21x = 595,392,681.83
  5. Step 5: Solve for x
    x = 595,392,681.83/27,989.21
  6. Step 6: Final answer
    x = 21,272.23

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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.