Home / 20,112.32-27,759.05-11,615.83

Finding the Fourth Proportional to 20,112.32, 27,759.05 and 11,615.83

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Solution

The fourth proportional to 20,112.32, 27,759.05 and 11,615.83 is: 16,032.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,112.32 : 27,759.05 = 11,615.83 : x
  2. Step 2: Convert to fraction form
    20,112.32/27,759.05 = 11,615.83/x
  3. Step 3: Cross multiply
    20,112.32x = 27,759.05 × 11,615.83
  4. Step 4: Simplify right side
    20,112.32x = 322,444,405.76
  5. Step 5: Solve for x
    x = 322,444,405.76/20,112.32
  6. Step 6: Final answer
    x = 16,032.18

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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.