Home / 15,517.25-21,413.63-8,443.55

Finding the Fourth Proportional to 15,517.25, 21,413.63 and 8,443.55

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Solution

The fourth proportional to 15,517.25, 21,413.63 and 8,443.55 is: 11,652.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,517.25 : 21,413.63 = 8,443.55 : x
  2. Step 2: Convert to fraction form
    15,517.25/21,413.63 = 8,443.55/x
  3. Step 3: Cross multiply
    15,517.25x = 21,413.63 × 8,443.55
  4. Step 4: Simplify right side
    15,517.25x = 180,807,013.37
  5. Step 5: Solve for x
    x = 180,807,013.37/15,517.25
  6. Step 6: Final answer
    x = 11,652.00

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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.