Home / 20,362.62-28,099.83-11,979.58

Finding the Fourth Proportional to 20,362.62, 28,099.83 and 11,979.58

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Solution

The fourth proportional to 20,362.62, 28,099.83 and 11,979.58 is: 16,531.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,362.62 : 28,099.83 = 11,979.58 : x
  2. Step 2: Convert to fraction form
    20,362.62/28,099.83 = 11,979.58/x
  3. Step 3: Cross multiply
    20,362.62x = 28,099.83 × 11,979.58
  4. Step 4: Simplify right side
    20,362.62x = 336,624,161.47
  5. Step 5: Solve for x
    x = 336,624,161.47/20,362.62
  6. Step 6: Final answer
    x = 16,531.48

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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.