Home / 39,804.72-54,929.91-21,898.65

Finding the Fourth Proportional to 39,804.72, 54,929.91 and 21,898.65

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Solution

The fourth proportional to 39,804.72, 54,929.91 and 21,898.65 is: 30,219.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,804.72 : 54,929.91 = 21,898.65 : x
  2. Step 2: Convert to fraction form
    39,804.72/54,929.91 = 21,898.65/x
  3. Step 3: Cross multiply
    39,804.72x = 54,929.91 × 21,898.65
  4. Step 4: Simplify right side
    39,804.72x = 1,202,890,873.62
  5. Step 5: Solve for x
    x = 1,202,890,873.62/39,804.72
  6. Step 6: Final answer
    x = 30,219.80

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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.