Home / 39,435.06-54,418.26-21,529.80

Finding the Fourth Proportional to 39,435.06, 54,418.26 and 21,529.80

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Solution

The fourth proportional to 39,435.06, 54,418.26 and 21,529.80 is: 29,709.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,435.06 : 54,418.26 = 21,529.80 : x
  2. Step 2: Convert to fraction form
    39,435.06/54,418.26 = 21,529.80/x
  3. Step 3: Cross multiply
    39,435.06x = 54,418.26 × 21,529.80
  4. Step 4: Simplify right side
    39,435.06x = 1,171,614,254.15
  5. Step 5: Solve for x
    x = 1,171,614,254.15/39,435.06
  6. Step 6: Final answer
    x = 29,709.97

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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.