Home / 28,269.18-42,368.94-11,618.82

Finding the Fourth Proportional to 28,269.18, 42,368.94 and 11,618.82

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Solution

The fourth proportional to 28,269.18, 42,368.94 and 11,618.82 is: 17,413.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,269.18 : 42,368.94 = 11,618.82 : x
  2. Step 2: Convert to fraction form
    28,269.18/42,368.94 = 11,618.82/x
  3. Step 3: Cross multiply
    28,269.18x = 42,368.94 × 11,618.82
  4. Step 4: Simplify right side
    28,269.18x = 492,277,087.45
  5. Step 5: Solve for x
    x = 492,277,087.45/28,269.18
  6. Step 6: Final answer
    x = 17,413.91

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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.