Home / 15,517.28-21,413.86-8,443.74

Finding the Fourth Proportional to 15,517.28, 21,413.86 and 8,443.74

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Solution

The fourth proportional to 15,517.28, 21,413.86 and 8,443.74 is: 11,652.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,517.28 : 21,413.86 = 8,443.74 : x
  2. Step 2: Convert to fraction form
    15,517.28/21,413.86 = 8,443.74/x
  3. Step 3: Cross multiply
    15,517.28x = 21,413.86 × 8,443.74
  4. Step 4: Simplify right side
    15,517.28x = 180,813,066.24
  5. Step 5: Solve for x
    x = 180,813,066.24/15,517.28
  6. Step 6: Final answer
    x = 11,652.37

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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.