Home / 20,216.96-27,886.72-13,918.40

Finding the Fourth Proportional to 20,216.96, 27,886.72 and 13,918.40

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Solution

The fourth proportional to 20,216.96, 27,886.72 and 13,918.40 is: 19,198.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,216.96 : 27,886.72 = 13,918.40 : x
  2. Step 2: Convert to fraction form
    20,216.96/27,886.72 = 13,918.40/x
  3. Step 3: Cross multiply
    20,216.96x = 27,886.72 × 13,918.40
  4. Step 4: Simplify right side
    20,216.96x = 388,138,523.65
  5. Step 5: Solve for x
    x = 388,138,523.65/20,216.96
  6. Step 6: Final answer
    x = 19,198.66

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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.