Home / 13,290.49-19,939.01-3,930.46

Finding the Fourth Proportional to 13,290.49, 19,939.01 and 3,930.46

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Solution

The fourth proportional to 13,290.49, 19,939.01 and 3,930.46 is: 5,896.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,290.49 : 19,939.01 = 3,930.46 : x
  2. Step 2: Convert to fraction form
    13,290.49/19,939.01 = 3,930.46/x
  3. Step 3: Cross multiply
    13,290.49x = 19,939.01 × 3,930.46
  4. Step 4: Simplify right side
    13,290.49x = 78,369,481.24
  5. Step 5: Solve for x
    x = 78,369,481.24/13,290.49
  6. Step 6: Final answer
    x = 5,896.66

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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.