Home / 39,628.41-54,687.25-21,724.07

Finding the Fourth Proportional to 39,628.41, 54,687.25 and 21,724.07

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Solution

The fourth proportional to 39,628.41, 54,687.25 and 21,724.07 is: 29,979.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,628.41 : 54,687.25 = 21,724.07 : x
  2. Step 2: Convert to fraction form
    39,628.41/54,687.25 = 21,724.07/x
  3. Step 3: Cross multiply
    39,628.41x = 54,687.25 × 21,724.07
  4. Step 4: Simplify right side
    39,628.41x = 1,188,029,400.83
  5. Step 5: Solve for x
    x = 1,188,029,400.83/39,628.41
  6. Step 6: Final answer
    x = 29,979.24

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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.