Home / 20,220.48-27,905.04-11,722.46

Finding the Fourth Proportional to 20,220.48, 27,905.04 and 11,722.46

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Solution

The fourth proportional to 20,220.48, 27,905.04 and 11,722.46 is: 16,177.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,220.48 : 27,905.04 = 11,722.46 : x
  2. Step 2: Convert to fraction form
    20,220.48/27,905.04 = 11,722.46/x
  3. Step 3: Cross multiply
    20,220.48x = 27,905.04 × 11,722.46
  4. Step 4: Simplify right side
    20,220.48x = 327,115,575.67
  5. Step 5: Solve for x
    x = 327,115,575.67/20,220.48
  6. Step 6: Final answer
    x = 16,177.44

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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.