Home / 28,584.98-39,427.58-20,105.09

Finding the Fourth Proportional to 28,584.98, 39,427.58 and 20,105.09

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Solution

The fourth proportional to 28,584.98, 39,427.58 and 20,105.09 is: 27,731.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,584.98 : 39,427.58 = 20,105.09 : x
  2. Step 2: Convert to fraction form
    28,584.98/39,427.58 = 20,105.09/x
  3. Step 3: Cross multiply
    28,584.98x = 39,427.58 × 20,105.09
  4. Step 4: Simplify right side
    28,584.98x = 792,695,044.38
  5. Step 5: Solve for x
    x = 792,695,044.38/28,584.98
  6. Step 6: Final answer
    x = 27,731.17

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1.5x scale

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.