Home / 13,503.78-20,258.91-5,183.87

Finding the Fourth Proportional to 13,503.78, 20,258.91 and 5,183.87

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Solution

The fourth proportional to 13,503.78, 20,258.91 and 5,183.87 is: 7,777.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,503.78 : 20,258.91 = 5,183.87 : x
  2. Step 2: Convert to fraction form
    13,503.78/20,258.91 = 5,183.87/x
  3. Step 3: Cross multiply
    13,503.78x = 20,258.91 × 5,183.87
  4. Step 4: Simplify right side
    13,503.78x = 105,019,454.49
  5. Step 5: Solve for x
    x = 105,019,454.49/13,503.78
  6. Step 6: Final answer
    x = 7,777.04

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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.