Home / 39,751.98-54,856.60-21,847

Finding the Fourth Proportional to 39,751.98, 54,856.60 and 21,847

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Solution

The fourth proportional to 39,751.98, 54,856.60 and 21,847 is: 30,148.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,751.98 : 54,856.60 = 21,847 : x
  2. Step 2: Convert to fraction form
    39,751.98/54,856.60 = 21,847/x
  3. Step 3: Cross multiply
    39,751.98x = 54,856.60 × 21,847
  4. Step 4: Simplify right side
    39,751.98x = 1,198,452,140.20
  5. Step 5: Solve for x
    x = 1,198,452,140.20/39,751.98
  6. Step 6: Final answer
    x = 30,148.24

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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.