Home / 27,907.21-38,511.90-15,331.97

Finding the Fourth Proportional to 27,907.21, 38,511.90 and 15,331.97

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Solution

The fourth proportional to 27,907.21, 38,511.90 and 15,331.97 is: 21,158.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,907.21 : 38,511.90 = 15,331.97 : x
  2. Step 2: Convert to fraction form
    27,907.21/38,511.90 = 15,331.97/x
  3. Step 3: Cross multiply
    27,907.21x = 38,511.90 × 15,331.97
  4. Step 4: Simplify right side
    27,907.21x = 590,463,295.44
  5. Step 5: Solve for x
    x = 590,463,295.44/27,907.21
  6. Step 6: Final answer
    x = 21,158.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.