Home / 15,219.80-21,001.92-8,504.49

Finding the Fourth Proportional to 15,219.80, 21,001.92 and 8,504.49

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Solution

The fourth proportional to 15,219.80, 21,001.92 and 8,504.49 is: 11,735.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,219.80 : 21,001.92 = 8,504.49 : x
  2. Step 2: Convert to fraction form
    15,219.80/21,001.92 = 8,504.49/x
  3. Step 3: Cross multiply
    15,219.80x = 21,001.92 × 8,504.49
  4. Step 4: Simplify right side
    15,219.80x = 178,610,665.49
  5. Step 5: Solve for x
    x = 178,610,665.49/15,219.80
  6. Step 6: Final answer
    x = 11,735.42

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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.