Home / 20,265.21-27,963.14-11,311.47

Finding the Fourth Proportional to 20,265.21, 27,963.14 and 11,311.47

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Solution

The fourth proportional to 20,265.21, 27,963.14 and 11,311.47 is: 15,608.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,265.21 : 27,963.14 = 11,311.47 : x
  2. Step 2: Convert to fraction form
    20,265.21/27,963.14 = 11,311.47/x
  3. Step 3: Cross multiply
    20,265.21x = 27,963.14 × 11,311.47
  4. Step 4: Simplify right side
    20,265.21x = 316,304,162.66
  5. Step 5: Solve for x
    x = 316,304,162.66/20,265.21
  6. Step 6: Final answer
    x = 15,608.24

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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.