Home / 20,917.16-28,865.73-11,486.33

Finding the Fourth Proportional to 20,917.16, 28,865.73 and 11,486.33

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Solution

The fourth proportional to 20,917.16, 28,865.73 and 11,486.33 is: 15,851.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,917.16 : 28,865.73 = 11,486.33 : x
  2. Step 2: Convert to fraction form
    20,917.16/28,865.73 = 11,486.33/x
  3. Step 3: Cross multiply
    20,917.16x = 28,865.73 × 11,486.33
  4. Step 4: Simplify right side
    20,917.16x = 331,561,300.47
  5. Step 5: Solve for x
    x = 331,561,300.47/20,917.16
  6. Step 6: Final answer
    x = 15,851.16

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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.