Home / 39,723.03-54,819.18-21,819.69

Finding the Fourth Proportional to 39,723.03, 54,819.18 and 21,819.69

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Solution

The fourth proportional to 39,723.03, 54,819.18 and 21,819.69 is: 30,111.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,723.03 : 54,819.18 = 21,819.69 : x
  2. Step 2: Convert to fraction form
    39,723.03/54,819.18 = 21,819.69/x
  3. Step 3: Cross multiply
    39,723.03x = 54,819.18 × 21,819.69
  4. Step 4: Simplify right side
    39,723.03x = 1,196,137,513.65
  5. Step 5: Solve for x
    x = 1,196,137,513.65/39,723.03
  6. Step 6: Final answer
    x = 30,111.94

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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.