Home / 18,916.83-28,346.07-11,976.75

Finding the Fourth Proportional to 18,916.83, 28,346.07 and 11,976.75

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Solution

The fourth proportional to 18,916.83, 28,346.07 and 11,976.75 is: 17,946.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,916.83 : 28,346.07 = 11,976.75 : x
  2. Step 2: Convert to fraction form
    18,916.83/28,346.07 = 11,976.75/x
  3. Step 3: Cross multiply
    18,916.83x = 28,346.07 × 11,976.75
  4. Step 4: Simplify right side
    18,916.83x = 339,493,793.87
  5. Step 5: Solve for x
    x = 339,493,793.87/18,916.83
  6. Step 6: Final answer
    x = 17,946.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.