Home / 20,102.36-27,740.27-11,149.07

Finding the Fourth Proportional to 20,102.36, 27,740.27 and 11,149.07

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Solution

The fourth proportional to 20,102.36, 27,740.27 and 11,149.07 is: 15,385.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,102.36 : 27,740.27 = 11,149.07 : x
  2. Step 2: Convert to fraction form
    20,102.36/27,740.27 = 11,149.07/x
  3. Step 3: Cross multiply
    20,102.36x = 27,740.27 × 11,149.07
  4. Step 4: Simplify right side
    20,102.36x = 309,278,101.22
  5. Step 5: Solve for x
    x = 309,278,101.22/20,102.36
  6. Step 6: Final answer
    x = 15,385.17

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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.