Home / 13,512.48-20,255.76-4,272

Finding the Fourth Proportional to 13,512.48, 20,255.76 and 4,272

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Solution

The fourth proportional to 13,512.48, 20,255.76 and 4,272 is: 6,403.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,512.48 : 20,255.76 = 4,272 : x
  2. Step 2: Convert to fraction form
    13,512.48/20,255.76 = 4,272/x
  3. Step 3: Cross multiply
    13,512.48x = 20,255.76 × 4,272
  4. Step 4: Simplify right side
    13,512.48x = 86,532,606.72
  5. Step 5: Solve for x
    x = 86,532,606.72/13,512.48
  6. Step 6: Final answer
    x = 6,403.90

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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.