Home / 11,520.36-17,280.54-3,729.78

Finding the Fourth Proportional to 11,520.36, 17,280.54 and 3,729.78

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Solution

The fourth proportional to 11,520.36, 17,280.54 and 3,729.78 is: 5,594.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,520.36 : 17,280.54 = 3,729.78 : x
  2. Step 2: Convert to fraction form
    11,520.36/17,280.54 = 3,729.78/x
  3. Step 3: Cross multiply
    11,520.36x = 17,280.54 × 3,729.78
  4. Step 4: Simplify right side
    11,520.36x = 64,452,612.48
  5. Step 5: Solve for x
    x = 64,452,612.48/11,520.36
  6. Step 6: Final answer
    x = 5,594.67

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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.