Home / 20,932.49-31,412.70-7,786.19

Finding the Fourth Proportional to 20,932.49, 31,412.70 and 7,786.19

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Solution

The fourth proportional to 20,932.49, 31,412.70 and 7,786.19 is: 11,684.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,932.49 : 31,412.70 = 7,786.19 : x
  2. Step 2: Convert to fraction form
    20,932.49/31,412.70 = 7,786.19/x
  3. Step 3: Cross multiply
    20,932.49x = 31,412.70 × 7,786.19
  4. Step 4: Simplify right side
    20,932.49x = 244,585,093.55
  5. Step 5: Solve for x
    x = 244,585,093.55/20,932.49
  6. Step 6: Final answer
    x = 11,684.47

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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.