Home / 38,633.82-53,315.99-21,638.79

Finding the Fourth Proportional to 38,633.82, 53,315.99 and 21,638.79

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Solution

The fourth proportional to 38,633.82, 53,315.99 and 21,638.79 is: 29,862.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,633.82 : 53,315.99 = 21,638.79 : x
  2. Step 2: Convert to fraction form
    38,633.82/53,315.99 = 21,638.79/x
  3. Step 3: Cross multiply
    38,633.82x = 53,315.99 × 21,638.79
  4. Step 4: Simplify right side
    38,633.82x = 1,153,693,403.06
  5. Step 5: Solve for x
    x = 1,153,693,403.06/38,633.82
  6. Step 6: Final answer
    x = 29,862.27

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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.