Home / 38,431.89-57,649.59-11,775.96

Finding the Fourth Proportional to 38,431.89, 57,649.59 and 11,775.96

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Solution

The fourth proportional to 38,431.89, 57,649.59 and 11,775.96 is: 17,664.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,431.89 : 57,649.59 = 11,775.96 : x
  2. Step 2: Convert to fraction form
    38,431.89/57,649.59 = 11,775.96/x
  3. Step 3: Cross multiply
    38,431.89x = 57,649.59 × 11,775.96
  4. Step 4: Simplify right side
    38,431.89x = 678,879,265.86
  5. Step 5: Solve for x
    x = 678,879,265.86/38,431.89
  6. Step 6: Final answer
    x = 17,664.48

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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.