Home / 39,750.29-54,856.41-21,845.75

Finding the Fourth Proportional to 39,750.29, 54,856.41 and 21,845.75

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Solution

The fourth proportional to 39,750.29, 54,856.41 and 21,845.75 is: 30,147.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,750.29 : 54,856.41 = 21,845.75 : x
  2. Step 2: Convert to fraction form
    39,750.29/54,856.41 = 21,845.75/x
  3. Step 3: Cross multiply
    39,750.29x = 54,856.41 × 21,845.75
  4. Step 4: Simplify right side
    39,750.29x = 1,198,379,418.76
  5. Step 5: Solve for x
    x = 1,198,379,418.76/39,750.29
  6. Step 6: Final answer
    x = 30,147.69

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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.