Home / 19,704.11-27,221.31-12,914.28

Finding the Fourth Proportional to 19,704.11, 27,221.31 and 12,914.28

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Solution

The fourth proportional to 19,704.11, 27,221.31 and 12,914.28 is: 17,841.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,704.11 : 27,221.31 = 12,914.28 : x
  2. Step 2: Convert to fraction form
    19,704.11/27,221.31 = 12,914.28/x
  3. Step 3: Cross multiply
    19,704.11x = 27,221.31 × 12,914.28
  4. Step 4: Simplify right side
    19,704.11x = 351,543,619.31
  5. Step 5: Solve for x
    x = 351,543,619.31/19,704.11
  6. Step 6: Final answer
    x = 17,841.14

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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.