Home / 39,633.21-54,697.28-21,731.63

Finding the Fourth Proportional to 39,633.21, 54,697.28 and 21,731.63

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Solution

The fourth proportional to 39,633.21, 54,697.28 and 21,731.63 is: 29,991.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,633.21 : 54,697.28 = 21,731.63 : x
  2. Step 2: Convert to fraction form
    39,633.21/54,697.28 = 21,731.63/x
  3. Step 3: Cross multiply
    39,633.21x = 54,697.28 × 21,731.63
  4. Step 4: Simplify right side
    39,633.21x = 1,188,661,050.97
  5. Step 5: Solve for x
    x = 1,188,661,050.97/39,633.21
  6. Step 6: Final answer
    x = 29,991.54

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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.