Home / 13,745.90-20,610.65-4,977.86

Finding the Fourth Proportional to 13,745.90, 20,610.65 and 4,977.86

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Solution

The fourth proportional to 13,745.90, 20,610.65 and 4,977.86 is: 7,463.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,745.90 : 20,610.65 = 4,977.86 : x
  2. Step 2: Convert to fraction form
    13,745.90/20,610.65 = 4,977.86/x
  3. Step 3: Cross multiply
    13,745.90x = 20,610.65 × 4,977.86
  4. Step 4: Simplify right side
    13,745.90x = 102,596,839.60
  5. Step 5: Solve for x
    x = 102,596,839.60/13,745.90
  6. Step 6: Final answer
    x = 7,463.81

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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.