Home / 11,160.78-16,741.20-4,919.40

Finding the Fourth Proportional to 11,160.78, 16,741.20 and 4,919.40

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Solution

The fourth proportional to 11,160.78, 16,741.20 and 4,919.40 is: 7,379.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,160.78 : 16,741.20 = 4,919.40 : x
  2. Step 2: Convert to fraction form
    11,160.78/16,741.20 = 4,919.40/x
  3. Step 3: Cross multiply
    11,160.78x = 16,741.20 × 4,919.40
  4. Step 4: Simplify right side
    11,160.78x = 82,356,659.28
  5. Step 5: Solve for x
    x = 82,356,659.28/11,160.78
  6. Step 6: Final answer
    x = 7,379.11

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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.