Home / 13,420.86-20,131.31-5,098.92

Finding the Fourth Proportional to 13,420.86, 20,131.31 and 5,098.92

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Solution

The fourth proportional to 13,420.86, 20,131.31 and 5,098.92 is: 7,648.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,420.86 : 20,131.31 = 5,098.92 : x
  2. Step 2: Convert to fraction form
    13,420.86/20,131.31 = 5,098.92/x
  3. Step 3: Cross multiply
    13,420.86x = 20,131.31 × 5,098.92
  4. Step 4: Simplify right side
    13,420.86x = 102,647,913.69
  5. Step 5: Solve for x
    x = 102,647,913.69/13,420.86
  6. Step 6: Final answer
    x = 7,648.39

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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.