Home / 13,609.01-18,778.98-7,641.33

Finding the Fourth Proportional to 13,609.01, 18,778.98 and 7,641.33

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Solution

The fourth proportional to 13,609.01, 18,778.98 and 7,641.33 is: 10,544.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,609.01 : 18,778.98 = 7,641.33 : x
  2. Step 2: Convert to fraction form
    13,609.01/18,778.98 = 7,641.33/x
  3. Step 3: Cross multiply
    13,609.01x = 18,778.98 × 7,641.33
  4. Step 4: Simplify right side
    13,609.01x = 143,496,383.24
  5. Step 5: Solve for x
    x = 143,496,383.24/13,609.01
  6. Step 6: Final answer
    x = 10,544.22

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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.