Home / 20,017.62-27,625.10-13,291.65

Finding the Fourth Proportional to 20,017.62, 27,625.10 and 13,291.65

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Solution

The fourth proportional to 20,017.62, 27,625.10 and 13,291.65 is: 18,342.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,017.62 : 27,625.10 = 13,291.65 : x
  2. Step 2: Convert to fraction form
    20,017.62/27,625.10 = 13,291.65/x
  3. Step 3: Cross multiply
    20,017.62x = 27,625.10 × 13,291.65
  4. Step 4: Simplify right side
    20,017.62x = 367,183,093.96
  5. Step 5: Solve for x
    x = 367,183,093.96/20,017.62
  6. Step 6: Final answer
    x = 18,342.99

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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.