Home / 39,719.21-54,812.43-21,814.37

Finding the Fourth Proportional to 39,719.21, 54,812.43 and 21,814.37

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Solution

The fourth proportional to 39,719.21, 54,812.43 and 21,814.37 is: 30,103.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,719.21 : 54,812.43 = 21,814.37 : x
  2. Step 2: Convert to fraction form
    39,719.21/54,812.43 = 21,814.37/x
  3. Step 3: Cross multiply
    39,719.21x = 54,812.43 × 21,814.37
  4. Step 4: Simplify right side
    39,719.21x = 1,195,698,354.56
  5. Step 5: Solve for x
    x = 1,195,698,354.56/39,719.21
  6. Step 6: Final answer
    x = 30,103.78

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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.