Home / 13,609.26-18,779.33-7,641.58

Finding the Fourth Proportional to 13,609.26, 18,779.33 and 7,641.58

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Solution

The fourth proportional to 13,609.26, 18,779.33 and 7,641.58 is: 10,544.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,609.26 : 18,779.33 = 7,641.58 : x
  2. Step 2: Convert to fraction form
    13,609.26/18,779.33 = 7,641.58/x
  3. Step 3: Cross multiply
    13,609.26x = 18,779.33 × 7,641.58
  4. Step 4: Simplify right side
    13,609.26x = 143,503,752.54
  5. Step 5: Solve for x
    x = 143,503,752.54/13,609.26
  6. Step 6: Final answer
    x = 10,544.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.