Home / 20,189.12-27,860.71-11,236.62

Finding the Fourth Proportional to 20,189.12, 27,860.71 and 11,236.62

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Solution

The fourth proportional to 20,189.12, 27,860.71 and 11,236.62 is: 15,506.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,189.12 : 27,860.71 = 11,236.62 : x
  2. Step 2: Convert to fraction form
    20,189.12/27,860.71 = 11,236.62/x
  3. Step 3: Cross multiply
    20,189.12x = 27,860.71 × 11,236.62
  4. Step 4: Simplify right side
    20,189.12x = 313,060,308.65
  5. Step 5: Solve for x
    x = 313,060,308.65/20,189.12
  6. Step 6: Final answer
    x = 15,506.38

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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.