Home / 39,147.10-54,021.51-21,241.73

Finding the Fourth Proportional to 39,147.10, 54,021.51 and 21,241.73

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Solution

The fourth proportional to 39,147.10, 54,021.51 and 21,241.73 is: 29,312.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,147.10 : 54,021.51 = 21,241.73 : x
  2. Step 2: Convert to fraction form
    39,147.10/54,021.51 = 21,241.73/x
  3. Step 3: Cross multiply
    39,147.10x = 54,021.51 × 21,241.73
  4. Step 4: Simplify right side
    39,147.10x = 1,147,510,329.61
  5. Step 5: Solve for x
    x = 1,147,510,329.61/39,147.10
  6. Step 6: Final answer
    x = 29,312.78

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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.