Home / 39,489.40-54,495.23-21,584.39

Finding the Fourth Proportional to 39,489.40, 54,495.23 and 21,584.39

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Solution

The fourth proportional to 39,489.40, 54,495.23 and 21,584.39 is: 29,786.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,489.40 : 54,495.23 = 21,584.39 : x
  2. Step 2: Convert to fraction form
    39,489.40/54,495.23 = 21,584.39/x
  3. Step 3: Cross multiply
    39,489.40x = 54,495.23 × 21,584.39
  4. Step 4: Simplify right side
    39,489.40x = 1,176,246,487.66
  5. Step 5: Solve for x
    x = 1,176,246,487.66/39,489.40
  6. Step 6: Final answer
    x = 29,786.39

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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.