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Finding the Fourth Proportional to 28,413.54, 42,622.47 and 8,693.58

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Solution

The fourth proportional to 28,413.54, 42,622.47 and 8,693.58 is: 13,041.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,413.54 : 42,622.47 = 8,693.58 : x
  2. Step 2: Convert to fraction form
    28,413.54/42,622.47 = 8,693.58/x
  3. Step 3: Cross multiply
    28,413.54x = 42,622.47 × 8,693.58
  4. Step 4: Simplify right side
    28,413.54x = 370,541,852.74
  5. Step 5: Solve for x
    x = 370,541,852.74/28,413.54
  6. Step 6: Final answer
    x = 13,041.03

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1.5x scale

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.