Home / 12,779.67-19,169.61-4,459.65

Finding the Fourth Proportional to 12,779.67, 19,169.61 and 4,459.65

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Solution

The fourth proportional to 12,779.67, 19,169.61 and 4,459.65 is: 6,689.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,779.67 : 19,169.61 = 4,459.65 : x
  2. Step 2: Convert to fraction form
    12,779.67/19,169.61 = 4,459.65/x
  3. Step 3: Cross multiply
    12,779.67x = 19,169.61 × 4,459.65
  4. Step 4: Simplify right side
    12,779.67x = 85,489,751.24
  5. Step 5: Solve for x
    x = 85,489,751.24/12,779.67
  6. Step 6: Final answer
    x = 6,689.51

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Similar ratio
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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.