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Finding the Fourth Proportional to 19,264.88, 28,897.31 and 5,413.88

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Solution

The fourth proportional to 19,264.88, 28,897.31 and 5,413.88 is: 8,120.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,264.88 : 28,897.31 = 5,413.88 : x
  2. Step 2: Convert to fraction form
    19,264.88/28,897.31 = 5,413.88/x
  3. Step 3: Cross multiply
    19,264.88x = 28,897.31 × 5,413.88
  4. Step 4: Simplify right side
    19,264.88x = 156,446,437.71
  5. Step 5: Solve for x
    x = 156,446,437.71/19,264.88
  6. Step 6: Final answer
    x = 8,120.81

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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.