Home / 13,290.64-19,935.99-3,930.82

Finding the Fourth Proportional to 13,290.64, 19,935.99 and 3,930.82

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Solution

The fourth proportional to 13,290.64, 19,935.99 and 3,930.82 is: 5,896.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,290.64 : 19,935.99 = 3,930.82 : x
  2. Step 2: Convert to fraction form
    13,290.64/19,935.99 = 3,930.82/x
  3. Step 3: Cross multiply
    13,290.64x = 19,935.99 × 3,930.82
  4. Step 4: Simplify right side
    13,290.64x = 78,364,738.37
  5. Step 5: Solve for x
    x = 78,364,738.37/13,290.64
  6. Step 6: Final answer
    x = 5,896.24

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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.