Home / 20,836.27-28,752.94-11,403.01

Finding the Fourth Proportional to 20,836.27, 28,752.94 and 11,403.01

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Solution

The fourth proportional to 20,836.27, 28,752.94 and 11,403.01 is: 15,735.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,836.27 : 28,752.94 = 11,403.01 : x
  2. Step 2: Convert to fraction form
    20,836.27/28,752.94 = 11,403.01/x
  3. Step 3: Cross multiply
    20,836.27x = 28,752.94 × 11,403.01
  4. Step 4: Simplify right side
    20,836.27x = 327,870,062.35
  5. Step 5: Solve for x
    x = 327,870,062.35/20,836.27
  6. Step 6: Final answer
    x = 15,735.54

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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.