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Finding the Fourth Proportional to 12,279.81, 16,943.22 and 7,244.22

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Solution

The fourth proportional to 12,279.81, 16,943.22 and 7,244.22 is: 9,995.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,279.81 : 16,943.22 = 7,244.22 : x
  2. Step 2: Convert to fraction form
    12,279.81/16,943.22 = 7,244.22/x
  3. Step 3: Cross multiply
    12,279.81x = 16,943.22 × 7,244.22
  4. Step 4: Simplify right side
    12,279.81x = 122,740,413.19
  5. Step 5: Solve for x
    x = 122,740,413.19/12,279.81
  6. Step 6: Final answer
    x = 9,995.30

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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.