Home / 39,160.85-54,040.52-21,255.47

Finding the Fourth Proportional to 39,160.85, 54,040.52 and 21,255.47

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Solution

The fourth proportional to 39,160.85, 54,040.52 and 21,255.47 is: 29,331.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,160.85 : 54,040.52 = 21,255.47 : x
  2. Step 2: Convert to fraction form
    39,160.85/54,040.52 = 21,255.47/x
  3. Step 3: Cross multiply
    39,160.85x = 54,040.52 × 21,255.47
  4. Step 4: Simplify right side
    39,160.85x = 1,148,656,651.64
  5. Step 5: Solve for x
    x = 1,148,656,651.64/39,160.85
  6. Step 6: Final answer
    x = 29,331.76

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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.