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Finding the Fourth Proportional to 18,415.22, 25,413.01 and 10,031.72

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Solution

The fourth proportional to 18,415.22, 25,413.01 and 10,031.72 is: 13,843.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,415.22 : 25,413.01 = 10,031.72 : x
  2. Step 2: Convert to fraction form
    18,415.22/25,413.01 = 10,031.72/x
  3. Step 3: Cross multiply
    18,415.22x = 25,413.01 × 10,031.72
  4. Step 4: Simplify right side
    18,415.22x = 254,936,200.68
  5. Step 5: Solve for x
    x = 254,936,200.68/18,415.22
  6. Step 6: Final answer
    x = 13,843.78

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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.