Home / 20,165.40-27,822.42-13,786.65

Finding the Fourth Proportional to 20,165.40, 27,822.42 and 13,786.65

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Solution

The fourth proportional to 20,165.40, 27,822.42 and 13,786.65 is: 19,021.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,165.40 : 27,822.42 = 13,786.65 : x
  2. Step 2: Convert to fraction form
    20,165.40/27,822.42 = 13,786.65/x
  3. Step 3: Cross multiply
    20,165.40x = 27,822.42 × 13,786.65
  4. Step 4: Simplify right side
    20,165.40x = 383,577,966.69
  5. Step 5: Solve for x
    x = 383,577,966.69/20,165.40
  6. Step 6: Final answer
    x = 19,021.59

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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.