Home / 13,519.64-18,653.82-7,929.56

Finding the Fourth Proportional to 13,519.64, 18,653.82 and 7,929.56

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Solution

The fourth proportional to 13,519.64, 18,653.82 and 7,929.56 is: 10,940.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,519.64 : 18,653.82 = 7,929.56 : x
  2. Step 2: Convert to fraction form
    13,519.64/18,653.82 = 7,929.56/x
  3. Step 3: Cross multiply
    13,519.64x = 18,653.82 × 7,929.56
  4. Step 4: Simplify right side
    13,519.64x = 147,916,584.92
  5. Step 5: Solve for x
    x = 147,916,584.92/13,519.64
  6. Step 6: Final answer
    x = 10,940.87

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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.