Home / 20,170.51-27,836.94-11,219.74

Finding the Fourth Proportional to 20,170.51, 27,836.94 and 11,219.74

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Solution

The fourth proportional to 20,170.51, 27,836.94 and 11,219.74 is: 15,484.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,170.51 : 27,836.94 = 11,219.74 : x
  2. Step 2: Convert to fraction form
    20,170.51/27,836.94 = 11,219.74/x
  3. Step 3: Cross multiply
    20,170.51x = 27,836.94 × 11,219.74
  4. Step 4: Simplify right side
    20,170.51x = 312,323,229.20
  5. Step 5: Solve for x
    x = 312,323,229.20/20,170.51
  6. Step 6: Final answer
    x = 15,484.15

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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.