Home / 39,771.78-54,885.42-21,866.91

Finding the Fourth Proportional to 39,771.78, 54,885.42 and 21,866.91

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Solution

The fourth proportional to 39,771.78, 54,885.42 and 21,866.91 is: 30,176.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,771.78 : 54,885.42 = 21,866.91 : x
  2. Step 2: Convert to fraction form
    39,771.78/54,885.42 = 21,866.91/x
  3. Step 3: Cross multiply
    39,771.78x = 54,885.42 × 21,866.91
  4. Step 4: Simplify right side
    39,771.78x = 1,200,174,539.45
  5. Step 5: Solve for x
    x = 1,200,174,539.45/39,771.78
  6. Step 6: Final answer
    x = 30,176.54

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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.