Home / 20,092.80-27,720.54-11,588.88

Finding the Fourth Proportional to 20,092.80, 27,720.54 and 11,588.88

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Solution

The fourth proportional to 20,092.80, 27,720.54 and 11,588.88 is: 15,988.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,092.80 : 27,720.54 = 11,588.88 : x
  2. Step 2: Convert to fraction form
    20,092.80/27,720.54 = 11,588.88/x
  3. Step 3: Cross multiply
    20,092.80x = 27,720.54 × 11,588.88
  4. Step 4: Simplify right side
    20,092.80x = 321,250,011.60
  5. Step 5: Solve for x
    x = 321,250,011.60/20,092.80
  6. Step 6: Final answer
    x = 15,988.31

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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.