Home / 38,668.70-58,021.32-21,137.96

Finding the Fourth Proportional to 38,668.70, 58,021.32 and 21,137.96

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Solution

The fourth proportional to 38,668.70, 58,021.32 and 21,137.96 is: 31,716.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,668.70 : 58,021.32 = 21,137.96 : x
  2. Step 2: Convert to fraction form
    38,668.70/58,021.32 = 21,137.96/x
  3. Step 3: Cross multiply
    38,668.70x = 58,021.32 × 21,137.96
  4. Step 4: Simplify right side
    38,668.70x = 1,226,452,341.31
  5. Step 5: Solve for x
    x = 1,226,452,341.31/38,668.70
  6. Step 6: Final answer
    x = 31,716.93

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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.