Home / 20,239.01-27,929.93-11,286.89

Finding the Fourth Proportional to 20,239.01, 27,929.93 and 11,286.89

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Solution

The fourth proportional to 20,239.01, 27,929.93 and 11,286.89 is: 15,575.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,239.01 : 27,929.93 = 11,286.89 : x
  2. Step 2: Convert to fraction form
    20,239.01/27,929.93 = 11,286.89/x
  3. Step 3: Cross multiply
    20,239.01x = 27,929.93 × 11,286.89
  4. Step 4: Simplify right side
    20,239.01x = 315,242,047.62
  5. Step 5: Solve for x
    x = 315,242,047.62/20,239.01
  6. Step 6: Final answer
    x = 15,575.96

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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.