Home / 20,450.95-30,621.75-11,673.79

Finding the Fourth Proportional to 20,450.95, 30,621.75 and 11,673.79

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Solution

The fourth proportional to 20,450.95, 30,621.75 and 11,673.79 is: 17,479.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,450.95 : 30,621.75 = 11,673.79 : x
  2. Step 2: Convert to fraction form
    20,450.95/30,621.75 = 11,673.79/x
  3. Step 3: Cross multiply
    20,450.95x = 30,621.75 × 11,673.79
  4. Step 4: Simplify right side
    20,450.95x = 357,471,878.93
  5. Step 5: Solve for x
    x = 357,471,878.93/20,450.95
  6. Step 6: Final answer
    x = 17,479.48

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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.