Home / 20,289.66-27,999.86-11,337.54

Finding the Fourth Proportional to 20,289.66, 27,999.86 and 11,337.54

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Solution

The fourth proportional to 20,289.66, 27,999.86 and 11,337.54 is: 15,645.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,289.66 : 27,999.86 = 11,337.54 : x
  2. Step 2: Convert to fraction form
    20,289.66/27,999.86 = 11,337.54/x
  3. Step 3: Cross multiply
    20,289.66x = 27,999.86 × 11,337.54
  4. Step 4: Simplify right side
    20,289.66x = 317,449,532.74
  5. Step 5: Solve for x
    x = 317,449,532.74/20,289.66
  6. Step 6: Final answer
    x = 15,645.88

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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.