Home / 30,805.80-46,208.57-12,072.60

Finding the Fourth Proportional to 30,805.80, 46,208.57 and 12,072.60

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Solution

The fourth proportional to 30,805.80, 46,208.57 and 12,072.60 is: 18,108.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,805.80 : 46,208.57 = 12,072.60 : x
  2. Step 2: Convert to fraction form
    30,805.80/46,208.57 = 12,072.60/x
  3. Step 3: Cross multiply
    30,805.80x = 46,208.57 × 12,072.60
  4. Step 4: Simplify right side
    30,805.80x = 557,857,521.82
  5. Step 5: Solve for x
    x = 557,857,521.82/30,805.80
  6. Step 6: Final answer
    x = 18,108.85

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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.