Home / 28,413.19-42,619.75-7,636.69

Finding the Fourth Proportional to 28,413.19, 42,619.75 and 7,636.69

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Solution

The fourth proportional to 28,413.19, 42,619.75 and 7,636.69 is: 11,455.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,413.19 : 42,619.75 = 7,636.69 : x
  2. Step 2: Convert to fraction form
    28,413.19/42,619.75 = 7,636.69/x
  3. Step 3: Cross multiply
    28,413.19x = 42,619.75 × 7,636.69
  4. Step 4: Simplify right side
    28,413.19x = 325,473,818.63
  5. Step 5: Solve for x
    x = 325,473,818.63/28,413.19
  6. Step 6: Final answer
    x = 11,455.03

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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.