Home / 20,087.47-27,720.26-11,134.89

Finding the Fourth Proportional to 20,087.47, 27,720.26 and 11,134.89

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Solution

The fourth proportional to 20,087.47, 27,720.26 and 11,134.89 is: 15,365.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,087.47 : 27,720.26 = 11,134.89 : x
  2. Step 2: Convert to fraction form
    20,087.47/27,720.26 = 11,134.89/x
  3. Step 3: Cross multiply
    20,087.47x = 27,720.26 × 11,134.89
  4. Step 4: Simplify right side
    20,087.47x = 308,662,143.01
  5. Step 5: Solve for x
    x = 308,662,143.01/20,087.47
  6. Step 6: Final answer
    x = 15,365.91

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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.