Home / 15,517.28-21,413.85-8,443.73

Finding the Fourth Proportional to 15,517.28, 21,413.85 and 8,443.73

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Solution

The fourth proportional to 15,517.28, 21,413.85 and 8,443.73 is: 11,652.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,517.28 : 21,413.85 = 8,443.73 : x
  2. Step 2: Convert to fraction form
    15,517.28/21,413.85 = 8,443.73/x
  3. Step 3: Cross multiply
    15,517.28x = 21,413.85 × 8,443.73
  4. Step 4: Simplify right side
    15,517.28x = 180,812,767.66
  5. Step 5: Solve for x
    x = 180,812,767.66/15,517.28
  6. Step 6: Final answer
    x = 11,652.35

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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.