Home / 28,413.84-42,635.40-12,629.76

Finding the Fourth Proportional to 28,413.84, 42,635.40 and 12,629.76

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Solution

The fourth proportional to 28,413.84, 42,635.40 and 12,629.76 is: 18,951.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,413.84 : 42,635.40 = 12,629.76 : x
  2. Step 2: Convert to fraction form
    28,413.84/42,635.40 = 12,629.76/x
  3. Step 3: Cross multiply
    28,413.84x = 42,635.40 × 12,629.76
  4. Step 4: Simplify right side
    28,413.84x = 538,474,869.50
  5. Step 5: Solve for x
    x = 538,474,869.50/28,413.84
  6. Step 6: Final answer
    x = 18,951.15

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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.