Home / 13,982.86-21,003.45-8,150.86

Finding the Fourth Proportional to 13,982.86, 21,003.45 and 8,150.86

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Solution

The fourth proportional to 13,982.86, 21,003.45 and 8,150.86 is: 12,243.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,982.86 : 21,003.45 = 8,150.86 : x
  2. Step 2: Convert to fraction form
    13,982.86/21,003.45 = 8,150.86/x
  3. Step 3: Cross multiply
    13,982.86x = 21,003.45 × 8,150.86
  4. Step 4: Simplify right side
    13,982.86x = 171,196,180.47
  5. Step 5: Solve for x
    x = 171,196,180.47/13,982.86
  6. Step 6: Final answer
    x = 12,243.29

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1.5x scale

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.