Home / 15,930.06-21,982.86-8,855.97

Finding the Fourth Proportional to 15,930.06, 21,982.86 and 8,855.97

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Solution

The fourth proportional to 15,930.06, 21,982.86 and 8,855.97 is: 12,220.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,930.06 : 21,982.86 = 8,855.97 : x
  2. Step 2: Convert to fraction form
    15,930.06/21,982.86 = 8,855.97/x
  3. Step 3: Cross multiply
    15,930.06x = 21,982.86 × 8,855.97
  4. Step 4: Simplify right side
    15,930.06x = 194,679,548.67
  5. Step 5: Solve for x
    x = 194,679,548.67/15,930.06
  6. Step 6: Final answer
    x = 12,220.89

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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.