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Finding the Fourth Proportional to 28,413.71, 42,619.02 and 8,692.26

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Solution

The fourth proportional to 28,413.71, 42,619.02 and 8,692.26 is: 13,037.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,413.71 : 42,619.02 = 8,692.26 : x
  2. Step 2: Convert to fraction form
    28,413.71/42,619.02 = 8,692.26/x
  3. Step 3: Cross multiply
    28,413.71x = 42,619.02 × 8,692.26
  4. Step 4: Simplify right side
    28,413.71x = 370,455,602.79
  5. Step 5: Solve for x
    x = 370,455,602.79/28,413.71
  6. Step 6: Final answer
    x = 13,037.92

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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.