Home / 21,849.33-30,148.97-12,287.89

Finding the Fourth Proportional to 21,849.33, 30,148.97 and 12,287.89

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Solution

The fourth proportional to 21,849.33, 30,148.97 and 12,287.89 is: 16,955.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,849.33 : 30,148.97 = 12,287.89 : x
  2. Step 2: Convert to fraction form
    21,849.33/30,148.97 = 12,287.89/x
  3. Step 3: Cross multiply
    21,849.33x = 30,148.97 × 12,287.89
  4. Step 4: Simplify right side
    21,849.33x = 370,467,226.97
  5. Step 5: Solve for x
    x = 370,467,226.97/21,849.33
  6. Step 6: Final answer
    x = 16,955.54

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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.