Home / 18,707.45-25,809.76-11,996.78

Finding the Fourth Proportional to 18,707.45, 25,809.76 and 11,996.78

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Solution

The fourth proportional to 18,707.45, 25,809.76 and 11,996.78 is: 16,551.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,707.45 : 25,809.76 = 11,996.78 : x
  2. Step 2: Convert to fraction form
    18,707.45/25,809.76 = 11,996.78/x
  3. Step 3: Cross multiply
    18,707.45x = 25,809.76 × 11,996.78
  4. Step 4: Simplify right side
    18,707.45x = 309,633,932.26
  5. Step 5: Solve for x
    x = 309,633,932.26/18,707.45
  6. Step 6: Final answer
    x = 16,551.37

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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.