Home / 13,579.20-18,740.16-8,876.16

Finding the Fourth Proportional to 13,579.20, 18,740.16 and 8,876.16

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Solution

The fourth proportional to 13,579.20, 18,740.16 and 8,876.16 is: 12,249.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,579.20 : 18,740.16 = 8,876.16 : x
  2. Step 2: Convert to fraction form
    13,579.20/18,740.16 = 8,876.16/x
  3. Step 3: Cross multiply
    13,579.20x = 18,740.16 × 8,876.16
  4. Step 4: Simplify right side
    13,579.20x = 166,340,658.59
  5. Step 5: Solve for x
    x = 166,340,658.59/13,579.20
  6. Step 6: Final answer
    x = 12,249.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.