Home / 39,635.87-54,697.75-21,731.09

Finding the Fourth Proportional to 39,635.87, 54,697.75 and 21,731.09

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Solution

The fourth proportional to 39,635.87, 54,697.75 and 21,731.09 is: 29,989.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,635.87 : 54,697.75 = 21,731.09 : x
  2. Step 2: Convert to fraction form
    39,635.87/54,697.75 = 21,731.09/x
  3. Step 3: Cross multiply
    39,635.87x = 54,697.75 × 21,731.09
  4. Step 4: Simplify right side
    39,635.87x = 1,188,641,400.23
  5. Step 5: Solve for x
    x = 1,188,641,400.23/39,635.87
  6. Step 6: Final answer
    x = 29,989.04

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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.