Home / 20,102.10-27,740.96-11,150.43

Finding the Fourth Proportional to 20,102.10, 27,740.96 and 11,150.43

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Solution

The fourth proportional to 20,102.10, 27,740.96 and 11,150.43 is: 15,387.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,102.10 : 27,740.96 = 11,150.43 : x
  2. Step 2: Convert to fraction form
    20,102.10/27,740.96 = 11,150.43/x
  3. Step 3: Cross multiply
    20,102.10x = 27,740.96 × 11,150.43
  4. Step 4: Simplify right side
    20,102.10x = 309,323,632.61
  5. Step 5: Solve for x
    x = 309,323,632.61/20,102.10
  6. Step 6: Final answer
    x = 15,387.63

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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.