Home / 20,190.88-27,844.04-15,402.32

Finding the Fourth Proportional to 20,190.88, 27,844.04 and 15,402.32

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Solution

The fourth proportional to 20,190.88, 27,844.04 and 15,402.32 is: 21,240.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,190.88 : 27,844.04 = 15,402.32 : x
  2. Step 2: Convert to fraction form
    20,190.88/27,844.04 = 15,402.32/x
  3. Step 3: Cross multiply
    20,190.88x = 27,844.04 × 15,402.32
  4. Step 4: Simplify right side
    20,190.88x = 428,862,814.17
  5. Step 5: Solve for x
    x = 428,862,814.17/20,190.88
  6. Step 6: Final answer
    x = 21,240.42

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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.