Home / 38,388.86-57,581.91-13,428.86

Finding the Fourth Proportional to 38,388.86, 57,581.91 and 13,428.86

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Solution

The fourth proportional to 38,388.86, 57,581.91 and 13,428.86 is: 20,142.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,388.86 : 57,581.91 = 13,428.86 : x
  2. Step 2: Convert to fraction form
    38,388.86/57,581.91 = 13,428.86/x
  3. Step 3: Cross multiply
    38,388.86x = 57,581.91 × 13,428.86
  4. Step 4: Simplify right side
    38,388.86x = 773,259,407.92
  5. Step 5: Solve for x
    x = 773,259,407.92/38,388.86
  6. Step 6: Final answer
    x = 20,142.81

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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.