Home / 20,170.77-27,837.35-11,219.96

Finding the Fourth Proportional to 20,170.77, 27,837.35 and 11,219.96

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Solution

The fourth proportional to 20,170.77, 27,837.35 and 11,219.96 is: 15,484.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,170.77 : 27,837.35 = 11,219.96 : x
  2. Step 2: Convert to fraction form
    20,170.77/27,837.35 = 11,219.96/x
  3. Step 3: Cross multiply
    20,170.77x = 27,837.35 × 11,219.96
  4. Step 4: Simplify right side
    20,170.77x = 312,333,758.22
  5. Step 5: Solve for x
    x = 312,333,758.22/20,170.77
  6. Step 6: Final answer
    x = 15,484.47

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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.