Home / 20,189.80-27,861.66-11,693.08

Finding the Fourth Proportional to 20,189.80, 27,861.66 and 11,693.08

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Solution

The fourth proportional to 20,189.80, 27,861.66 and 11,693.08 is: 16,136.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,189.80 : 27,861.66 = 11,693.08 : x
  2. Step 2: Convert to fraction form
    20,189.80/27,861.66 = 11,693.08/x
  3. Step 3: Cross multiply
    20,189.80x = 27,861.66 × 11,693.08
  4. Step 4: Simplify right side
    20,189.80x = 325,788,619.31
  5. Step 5: Solve for x
    x = 325,788,619.31/20,189.80
  6. Step 6: Final answer
    x = 16,136.30

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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.