Home / 12,821.67-19,235.07-5,426.10

Finding the Fourth Proportional to 12,821.67, 19,235.07 and 5,426.10

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Solution

The fourth proportional to 12,821.67, 19,235.07 and 5,426.10 is: 8,140.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,821.67 : 19,235.07 = 5,426.10 : x
  2. Step 2: Convert to fraction form
    12,821.67/19,235.07 = 5,426.10/x
  3. Step 3: Cross multiply
    12,821.67x = 19,235.07 × 5,426.10
  4. Step 4: Simplify right side
    12,821.67x = 104,371,413.33
  5. Step 5: Solve for x
    x = 104,371,413.33/12,821.67
  6. Step 6: Final answer
    x = 8,140.24

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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.