Home / 20,293.39-28,004.79-11,340.89

Finding the Fourth Proportional to 20,293.39, 28,004.79 and 11,340.89

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Solution

The fourth proportional to 20,293.39, 28,004.79 and 11,340.89 is: 15,650.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,293.39 : 28,004.79 = 11,340.89 : x
  2. Step 2: Convert to fraction form
    20,293.39/28,004.79 = 11,340.89/x
  3. Step 3: Cross multiply
    20,293.39x = 28,004.79 × 11,340.89
  4. Step 4: Simplify right side
    20,293.39x = 317,599,102.84
  5. Step 5: Solve for x
    x = 317,599,102.84/20,293.39
  6. Step 6: Final answer
    x = 15,650.37

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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.