Home / 11,439.40-17,163.05-4,779.45

Finding the Fourth Proportional to 11,439.40, 17,163.05 and 4,779.45

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Solution

The fourth proportional to 11,439.40, 17,163.05 and 4,779.45 is: 7,170.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,439.40 : 17,163.05 = 4,779.45 : x
  2. Step 2: Convert to fraction form
    11,439.40/17,163.05 = 4,779.45/x
  3. Step 3: Cross multiply
    11,439.40x = 17,163.05 × 4,779.45
  4. Step 4: Simplify right side
    11,439.40x = 82,029,939.32
  5. Step 5: Solve for x
    x = 82,029,939.32/11,439.40
  6. Step 6: Final answer
    x = 7,170.83

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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.