Home / 11,155.90-16,738.68-4,228.78

Finding the Fourth Proportional to 11,155.90, 16,738.68 and 4,228.78

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Solution

The fourth proportional to 11,155.90, 16,738.68 and 4,228.78 is: 6,345.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,155.90 : 16,738.68 = 4,228.78 : x
  2. Step 2: Convert to fraction form
    11,155.90/16,738.68 = 4,228.78/x
  3. Step 3: Cross multiply
    11,155.90x = 16,738.68 × 4,228.78
  4. Step 4: Simplify right side
    11,155.90x = 70,784,195.21
  5. Step 5: Solve for x
    x = 70,784,195.21/11,155.90
  6. Step 6: Final answer
    x = 6,345.00

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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.