Home / 12,290.26-16,940.73-8,309.92

Finding the Fourth Proportional to 12,290.26, 16,940.73 and 8,309.92

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Solution

The fourth proportional to 12,290.26, 16,940.73 and 8,309.92 is: 11,454.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,290.26 : 16,940.73 = 8,309.92 : x
  2. Step 2: Convert to fraction form
    12,290.26/16,940.73 = 8,309.92/x
  3. Step 3: Cross multiply
    12,290.26x = 16,940.73 × 8,309.92
  4. Step 4: Simplify right side
    12,290.26x = 140,776,111.04
  5. Step 5: Solve for x
    x = 140,776,111.04/12,290.26
  6. Step 6: Final answer
    x = 11,454.28

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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.