Home / 28,812.54-39,776.97-19,907.91

Finding the Fourth Proportional to 28,812.54, 39,776.97 and 19,907.91

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Solution

The fourth proportional to 28,812.54, 39,776.97 and 19,907.91 is: 27,483.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,812.54 : 39,776.97 = 19,907.91 : x
  2. Step 2: Convert to fraction form
    28,812.54/39,776.97 = 19,907.91/x
  3. Step 3: Cross multiply
    28,812.54x = 39,776.97 × 19,907.91
  4. Step 4: Simplify right side
    28,812.54x = 791,876,413.49
  5. Step 5: Solve for x
    x = 791,876,413.49/28,812.54
  6. Step 6: Final answer
    x = 27,483.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.