Home / 12,194.47-18,288.97-7,976.40

Finding the Fourth Proportional to 12,194.47, 18,288.97 and 7,976.40

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Solution

The fourth proportional to 12,194.47, 18,288.97 and 7,976.40 is: 11,962.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,194.47 : 18,288.97 = 7,976.40 : x
  2. Step 2: Convert to fraction form
    12,194.47/18,288.97 = 7,976.40/x
  3. Step 3: Cross multiply
    12,194.47x = 18,288.97 × 7,976.40
  4. Step 4: Simplify right side
    12,194.47x = 145,880,140.31
  5. Step 5: Solve for x
    x = 145,880,140.31/12,194.47
  6. Step 6: Final answer
    x = 11,962.81

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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.