Home / 39,635.94-54,697.53-21,731.58

Finding the Fourth Proportional to 39,635.94, 54,697.53 and 21,731.58

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Solution

The fourth proportional to 39,635.94, 54,697.53 and 21,731.58 is: 29,989.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,635.94 : 54,697.53 = 21,731.58 : x
  2. Step 2: Convert to fraction form
    39,635.94/54,697.53 = 21,731.58/x
  3. Step 3: Cross multiply
    39,635.94x = 54,697.53 × 21,731.58
  4. Step 4: Simplify right side
    39,635.94x = 1,188,663,749.00
  5. Step 5: Solve for x
    x = 1,188,663,749.00/39,635.94
  6. Step 6: Final answer
    x = 29,989.54

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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.