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Finding the Fourth Proportional to 14,413.58, 19,889.79 and 8,125.82

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Solution

The fourth proportional to 14,413.58, 19,889.79 and 8,125.82 is: 11,213.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,413.58 : 19,889.79 = 8,125.82 : x
  2. Step 2: Convert to fraction form
    14,413.58/19,889.79 = 8,125.82/x
  3. Step 3: Cross multiply
    14,413.58x = 19,889.79 × 8,125.82
  4. Step 4: Simplify right side
    14,413.58x = 161,620,853.38
  5. Step 5: Solve for x
    x = 161,620,853.38/14,413.58
  6. Step 6: Final answer
    x = 11,213.10

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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.