Home / 39,484.99-54,489.09-21,579.58

Finding the Fourth Proportional to 39,484.99, 54,489.09 and 21,579.58

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Solution

The fourth proportional to 39,484.99, 54,489.09 and 21,579.58 is: 29,779.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,484.99 : 54,489.09 = 21,579.58 : x
  2. Step 2: Convert to fraction form
    39,484.99/54,489.09 = 21,579.58/x
  3. Step 3: Cross multiply
    39,484.99x = 54,489.09 × 21,579.58
  4. Step 4: Simplify right side
    39,484.99x = 1,175,851,676.78
  5. Step 5: Solve for x
    x = 1,175,851,676.78/39,484.99
  6. Step 6: Final answer
    x = 29,779.71

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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.