Home / 13,745.43-20,618.15-4,977.45

Finding the Fourth Proportional to 13,745.43, 20,618.15 and 4,977.45

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Solution

The fourth proportional to 13,745.43, 20,618.15 and 4,977.45 is: 7,466.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,745.43 : 20,618.15 = 4,977.45 : x
  2. Step 2: Convert to fraction form
    13,745.43/20,618.15 = 4,977.45/x
  3. Step 3: Cross multiply
    13,745.43x = 20,618.15 × 4,977.45
  4. Step 4: Simplify right side
    13,745.43x = 102,625,785.83
  5. Step 5: Solve for x
    x = 102,625,785.83/13,745.43
  6. Step 6: Final answer
    x = 7,466.18

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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.