Home / 11,718.47-16,171.40-6,413.28

Finding the Fourth Proportional to 11,718.47, 16,171.40 and 6,413.28

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Solution

The fourth proportional to 11,718.47, 16,171.40 and 6,413.28 is: 8,850.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,718.47 : 16,171.40 = 6,413.28 : x
  2. Step 2: Convert to fraction form
    11,718.47/16,171.40 = 6,413.28/x
  3. Step 3: Cross multiply
    11,718.47x = 16,171.40 × 6,413.28
  4. Step 4: Simplify right side
    11,718.47x = 103,711,635.51
  5. Step 5: Solve for x
    x = 103,711,635.51/11,718.47
  6. Step 6: Final answer
    x = 8,850.27

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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.