Home / 20,042.70-30,087.34-11,728.68

Finding the Fourth Proportional to 20,042.70, 30,087.34 and 11,728.68

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Solution

The fourth proportional to 20,042.70, 30,087.34 and 11,728.68 is: 17,606.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,042.70 : 30,087.34 = 11,728.68 : x
  2. Step 2: Convert to fraction form
    20,042.70/30,087.34 = 11,728.68/x
  3. Step 3: Cross multiply
    20,042.70x = 30,087.34 × 11,728.68
  4. Step 4: Simplify right side
    20,042.70x = 352,884,782.91
  5. Step 5: Solve for x
    x = 352,884,782.91/20,042.70
  6. Step 6: Final answer
    x = 17,606.65

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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.