Home / 13,745.20-20,618.94-4,386.58

Finding the Fourth Proportional to 13,745.20, 20,618.94 and 4,386.58

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Solution

The fourth proportional to 13,745.20, 20,618.94 and 4,386.58 is: 6,580.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,745.20 : 20,618.94 = 4,386.58 : x
  2. Step 2: Convert to fraction form
    13,745.20/20,618.94 = 4,386.58/x
  3. Step 3: Cross multiply
    13,745.20x = 20,618.94 × 4,386.58
  4. Step 4: Simplify right side
    13,745.20x = 90,446,629.83
  5. Step 5: Solve for x
    x = 90,446,629.83/13,745.20
  6. Step 6: Final answer
    x = 6,580.23

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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.