Home / 20,178.16-27,845.72-11,104.07

Finding the Fourth Proportional to 20,178.16, 27,845.72 and 11,104.07

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Solution

The fourth proportional to 20,178.16, 27,845.72 and 11,104.07 is: 15,323.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,178.16 : 27,845.72 = 11,104.07 : x
  2. Step 2: Convert to fraction form
    20,178.16/27,845.72 = 11,104.07/x
  3. Step 3: Cross multiply
    20,178.16x = 27,845.72 × 11,104.07
  4. Step 4: Simplify right side
    20,178.16x = 309,200,851.84
  5. Step 5: Solve for x
    x = 309,200,851.84/20,178.16
  6. Step 6: Final answer
    x = 15,323.54

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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.