Home / 39,479.09-54,481.91-21,575.19

Finding the Fourth Proportional to 39,479.09, 54,481.91 and 21,575.19

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Solution

The fourth proportional to 39,479.09, 54,481.91 and 21,575.19 is: 29,774.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,479.09 : 54,481.91 = 21,575.19 : x
  2. Step 2: Convert to fraction form
    39,479.09/54,481.91 = 21,575.19/x
  3. Step 3: Cross multiply
    39,479.09x = 54,481.91 × 21,575.19
  4. Step 4: Simplify right side
    39,479.09x = 1,175,457,451.94
  5. Step 5: Solve for x
    x = 1,175,457,451.94/39,479.09
  6. Step 6: Final answer
    x = 29,774.18

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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.