Home / 18,439.36-27,662.61-7,907.91

Finding the Fourth Proportional to 18,439.36, 27,662.61 and 7,907.91

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Solution

The fourth proportional to 18,439.36, 27,662.61 and 7,907.91 is: 11,863.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,439.36 : 27,662.61 = 7,907.91 : x
  2. Step 2: Convert to fraction form
    18,439.36/27,662.61 = 7,907.91/x
  3. Step 3: Cross multiply
    18,439.36x = 27,662.61 × 7,907.91
  4. Step 4: Simplify right side
    18,439.36x = 218,753,390.71
  5. Step 5: Solve for x
    x = 218,753,390.71/18,439.36
  6. Step 6: Final answer
    x = 11,863.39

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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.