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Finding the Fourth Proportional to 12,279.51, 16,945.74 and 6,976.04

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Solution

The fourth proportional to 12,279.51, 16,945.74 and 6,976.04 is: 9,626.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,279.51 : 16,945.74 = 6,976.04 : x
  2. Step 2: Convert to fraction form
    12,279.51/16,945.74 = 6,976.04/x
  3. Step 3: Cross multiply
    12,279.51x = 16,945.74 × 6,976.04
  4. Step 4: Simplify right side
    12,279.51x = 118,214,075.34
  5. Step 5: Solve for x
    x = 118,214,075.34/12,279.51
  6. Step 6: Final answer
    x = 9,626.94

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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.