Home / 20,111.19-27,753.07-11,158.51

Finding the Fourth Proportional to 20,111.19, 27,753.07 and 11,158.51

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Solution

The fourth proportional to 20,111.19, 27,753.07 and 11,158.51 is: 15,398.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,111.19 : 27,753.07 = 11,158.51 : x
  2. Step 2: Convert to fraction form
    20,111.19/27,753.07 = 11,158.51/x
  3. Step 3: Cross multiply
    20,111.19x = 27,753.07 × 11,158.51
  4. Step 4: Simplify right side
    20,111.19x = 309,682,770.36
  5. Step 5: Solve for x
    x = 309,682,770.36/20,111.19
  6. Step 6: Final answer
    x = 15,398.53

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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.