Home / 12,999.26-17,940.75-7,963.76

Finding the Fourth Proportional to 12,999.26, 17,940.75 and 7,963.76

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Solution

The fourth proportional to 12,999.26, 17,940.75 and 7,963.76 is: 10,991.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,999.26 : 17,940.75 = 7,963.76 : x
  2. Step 2: Convert to fraction form
    12,999.26/17,940.75 = 7,963.76/x
  3. Step 3: Cross multiply
    12,999.26x = 17,940.75 × 7,963.76
  4. Step 4: Simplify right side
    12,999.26x = 142,875,827.22
  5. Step 5: Solve for x
    x = 142,875,827.22/12,999.26
  6. Step 6: Final answer
    x = 10,991.07

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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.