Home / 19,765.08-27,228.96-13,786.20

Finding the Fourth Proportional to 19,765.08, 27,228.96 and 13,786.20

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Solution

The fourth proportional to 19,765.08, 27,228.96 and 13,786.20 is: 18,992.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,765.08 : 27,228.96 = 13,786.20 : x
  2. Step 2: Convert to fraction form
    19,765.08/27,228.96 = 13,786.20/x
  3. Step 3: Cross multiply
    19,765.08x = 27,228.96 × 13,786.20
  4. Step 4: Simplify right side
    19,765.08x = 375,383,888.35
  5. Step 5: Solve for x
    x = 375,383,888.35/19,765.08
  6. Step 6: Final answer
    x = 18,992.28

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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.