Home / 18,255.12-27,333.72-12,696.72

Finding the Fourth Proportional to 18,255.12, 27,333.72 and 12,696.72

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Solution

The fourth proportional to 18,255.12, 27,333.72 and 12,696.72 is: 19,011.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,255.12 : 27,333.72 = 12,696.72 : x
  2. Step 2: Convert to fraction form
    18,255.12/27,333.72 = 12,696.72/x
  3. Step 3: Cross multiply
    18,255.12x = 27,333.72 × 12,696.72
  4. Step 4: Simplify right side
    18,255.12x = 347,048,589.40
  5. Step 5: Solve for x
    x = 347,048,589.40/18,255.12
  6. Step 6: Final answer
    x = 19,011.03

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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.