Home / 30,876.87-46,377.30-18,421.23

Finding the Fourth Proportional to 30,876.87, 46,377.30 and 18,421.23

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Solution

The fourth proportional to 30,876.87, 46,377.30 and 18,421.23 is: 27,668.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,876.87 : 46,377.30 = 18,421.23 : x
  2. Step 2: Convert to fraction form
    30,876.87/46,377.30 = 18,421.23/x
  3. Step 3: Cross multiply
    30,876.87x = 46,377.30 × 18,421.23
  4. Step 4: Simplify right side
    30,876.87x = 854,326,910.08
  5. Step 5: Solve for x
    x = 854,326,910.08/30,876.87
  6. Step 6: Final answer
    x = 27,668.83

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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.