Home / 39,751.38-54,856.80-21,847.50

Finding the Fourth Proportional to 39,751.38, 54,856.80 and 21,847.50

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Solution

The fourth proportional to 39,751.38, 54,856.80 and 21,847.50 is: 30,149.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,751.38 : 54,856.80 = 21,847.50 : x
  2. Step 2: Convert to fraction form
    39,751.38/54,856.80 = 21,847.50/x
  3. Step 3: Cross multiply
    39,751.38x = 54,856.80 × 21,847.50
  4. Step 4: Simplify right side
    39,751.38x = 1,198,483,938
  5. Step 5: Solve for x
    x = 1,198,483,938/39,751.38
  6. Step 6: Final answer
    x = 30,149.49

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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.