Home / 19,579.38-29,310.75-18,879.54

Finding the Fourth Proportional to 19,579.38, 29,310.75 and 18,879.54

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Solution

The fourth proportional to 19,579.38, 29,310.75 and 18,879.54 is: 28,263.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,579.38 : 29,310.75 = 18,879.54 : x
  2. Step 2: Convert to fraction form
    19,579.38/29,310.75 = 18,879.54/x
  3. Step 3: Cross multiply
    19,579.38x = 29,310.75 × 18,879.54
  4. Step 4: Simplify right side
    19,579.38x = 553,373,477.06
  5. Step 5: Solve for x
    x = 553,373,477.06/19,579.38
  6. Step 6: Final answer
    x = 28,263.07

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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.