Home / 53,429.41-80,137.77-13,989.70

Finding the Fourth Proportional to 53,429.41, 80,137.77 and 13,989.70

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Solution

The fourth proportional to 53,429.41, 80,137.77 and 13,989.70 is: 20,982.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,429.41 : 80,137.77 = 13,989.70 : x
  2. Step 2: Convert to fraction form
    53,429.41/80,137.77 = 13,989.70/x
  3. Step 3: Cross multiply
    53,429.41x = 80,137.77 × 13,989.70
  4. Step 4: Simplify right side
    53,429.41x = 1,121,103,360.97
  5. Step 5: Solve for x
    x = 1,121,103,360.97/53,429.41
  6. Step 6: Final answer
    x = 20,982.89

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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.