Home / 14,086.80-21,133.31-5,321.79

Finding the Fourth Proportional to 14,086.80, 21,133.31 and 5,321.79

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Solution

The fourth proportional to 14,086.80, 21,133.31 and 5,321.79 is: 7,983.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,086.80 : 21,133.31 = 5,321.79 : x
  2. Step 2: Convert to fraction form
    14,086.80/21,133.31 = 5,321.79/x
  3. Step 3: Cross multiply
    14,086.80x = 21,133.31 × 5,321.79
  4. Step 4: Simplify right side
    14,086.80x = 112,467,011.22
  5. Step 5: Solve for x
    x = 112,467,011.22/14,086.80
  6. Step 6: Final answer
    x = 7,983.86

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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.