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Finding the Fourth Proportional to 18,968.16, 28,413.30 and 15,250.32

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Solution

The fourth proportional to 18,968.16, 28,413.30 and 15,250.32 is: 22,844.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,968.16 : 28,413.30 = 15,250.32 : x
  2. Step 2: Convert to fraction form
    18,968.16/28,413.30 = 15,250.32/x
  3. Step 3: Cross multiply
    18,968.16x = 28,413.30 × 15,250.32
  4. Step 4: Simplify right side
    18,968.16x = 433,311,917.26
  5. Step 5: Solve for x
    x = 433,311,917.26/18,968.16
  6. Step 6: Final answer
    x = 22,844.17

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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.