Home / 39,295.89-54,228.34-21,391.03

Finding the Fourth Proportional to 39,295.89, 54,228.34 and 21,391.03

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Solution

The fourth proportional to 39,295.89, 54,228.34 and 21,391.03 is: 29,519.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,295.89 : 54,228.34 = 21,391.03 : x
  2. Step 2: Convert to fraction form
    39,295.89/54,228.34 = 21,391.03/x
  3. Step 3: Cross multiply
    39,295.89x = 54,228.34 × 21,391.03
  4. Step 4: Simplify right side
    39,295.89x = 1,160,000,163.78
  5. Step 5: Solve for x
    x = 1,160,000,163.78/39,295.89
  6. Step 6: Final answer
    x = 29,519.63

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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.