Home / 20,971.08-31,467.33-11,609.33

Finding the Fourth Proportional to 20,971.08, 31,467.33 and 11,609.33

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Solution

The fourth proportional to 20,971.08, 31,467.33 and 11,609.33 is: 17,419.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,971.08 : 31,467.33 = 11,609.33 : x
  2. Step 2: Convert to fraction form
    20,971.08/31,467.33 = 11,609.33/x
  3. Step 3: Cross multiply
    20,971.08x = 31,467.33 × 11,609.33
  4. Step 4: Simplify right side
    20,971.08x = 365,314,460.85
  5. Step 5: Solve for x
    x = 365,314,460.85/20,971.08
  6. Step 6: Final answer
    x = 17,419.92

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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.