Home / 18,426.94-27,640.40-12,226.55

Finding the Fourth Proportional to 18,426.94, 27,640.40 and 12,226.55

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Solution

The fourth proportional to 18,426.94, 27,640.40 and 12,226.55 is: 18,339.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,426.94 : 27,640.40 = 12,226.55 : x
  2. Step 2: Convert to fraction form
    18,426.94/27,640.40 = 12,226.55/x
  3. Step 3: Cross multiply
    18,426.94x = 27,640.40 × 12,226.55
  4. Step 4: Simplify right side
    18,426.94x = 337,946,533.29
  5. Step 5: Solve for x
    x = 337,946,533.29/18,426.94
  6. Step 6: Final answer
    x = 18,339.81

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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.