Home / 18,255.80-27,387.40-7,725.80

Finding the Fourth Proportional to 18,255.80, 27,387.40 and 7,725.80

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Solution

The fourth proportional to 18,255.80, 27,387.40 and 7,725.80 is: 11,590.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,255.80 : 27,387.40 = 7,725.80 : x
  2. Step 2: Convert to fraction form
    18,255.80/27,387.40 = 7,725.80/x
  3. Step 3: Cross multiply
    18,255.80x = 27,387.40 × 7,725.80
  4. Step 4: Simplify right side
    18,255.80x = 211,589,574.92
  5. Step 5: Solve for x
    x = 211,589,574.92/18,255.80
  6. Step 6: Final answer
    x = 11,590.27

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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.