Home / 39,680.42-54,758.81-21,775.73

Finding the Fourth Proportional to 39,680.42, 54,758.81 and 21,775.73

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Solution

The fourth proportional to 39,680.42, 54,758.81 and 21,775.73 is: 30,050.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,680.42 : 54,758.81 = 21,775.73 : x
  2. Step 2: Convert to fraction form
    39,680.42/54,758.81 = 21,775.73/x
  3. Step 3: Cross multiply
    39,680.42x = 54,758.81 × 21,775.73
  4. Step 4: Simplify right side
    39,680.42x = 1,192,412,842.33
  5. Step 5: Solve for x
    x = 1,192,412,842.33/39,680.42
  6. Step 6: Final answer
    x = 30,050.41

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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.