Home / 20,955.09-28,917.27-11,523.59

Finding the Fourth Proportional to 20,955.09, 28,917.27 and 11,523.59

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Solution

The fourth proportional to 20,955.09, 28,917.27 and 11,523.59 is: 15,902.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,955.09 : 28,917.27 = 11,523.59 : x
  2. Step 2: Convert to fraction form
    20,955.09/28,917.27 = 11,523.59/x
  3. Step 3: Cross multiply
    20,955.09x = 28,917.27 × 11,523.59
  4. Step 4: Simplify right side
    20,955.09x = 333,230,618.81
  5. Step 5: Solve for x
    x = 333,230,618.81/20,955.09
  6. Step 6: Final answer
    x = 15,902.13

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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.