Home / 13,745.72-20,618.60-4,981.32

Finding the Fourth Proportional to 13,745.72, 20,618.60 and 4,981.32

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Solution

The fourth proportional to 13,745.72, 20,618.60 and 4,981.32 is: 7,471.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,745.72 : 20,618.60 = 4,981.32 : x
  2. Step 2: Convert to fraction form
    13,745.72/20,618.60 = 4,981.32/x
  3. Step 3: Cross multiply
    13,745.72x = 20,618.60 × 4,981.32
  4. Step 4: Simplify right side
    13,745.72x = 102,707,844.55
  5. Step 5: Solve for x
    x = 102,707,844.55/13,745.72
  6. Step 6: Final answer
    x = 7,471.99

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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.