Home / 38,645.10-57,967.18-21,779.38

Finding the Fourth Proportional to 38,645.10, 57,967.18 and 21,779.38

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Solution

The fourth proportional to 38,645.10, 57,967.18 and 21,779.38 is: 32,668.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,645.10 : 57,967.18 = 21,779.38 : x
  2. Step 2: Convert to fraction form
    38,645.10/57,967.18 = 21,779.38/x
  3. Step 3: Cross multiply
    38,645.10x = 57,967.18 × 21,779.38
  4. Step 4: Simplify right side
    38,645.10x = 1,262,489,381.27
  5. Step 5: Solve for x
    x = 1,262,489,381.27/38,645.10
  6. Step 6: Final answer
    x = 32,668.81

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.