Home / 20,888.28-28,823.14-11,936.36

Finding the Fourth Proportional to 20,888.28, 28,823.14 and 11,936.36

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Solution

The fourth proportional to 20,888.28, 28,823.14 and 11,936.36 is: 16,470.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,888.28 : 28,823.14 = 11,936.36 : x
  2. Step 2: Convert to fraction form
    20,888.28/28,823.14 = 11,936.36/x
  3. Step 3: Cross multiply
    20,888.28x = 28,823.14 × 11,936.36
  4. Step 4: Simplify right side
    20,888.28x = 344,043,375.37
  5. Step 5: Solve for x
    x = 344,043,375.37/20,888.28
  6. Step 6: Final answer
    x = 16,470.64

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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.