Home / 20,090.82-27,723.45-11,137.57

Finding the Fourth Proportional to 20,090.82, 27,723.45 and 11,137.57

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Solution

The fourth proportional to 20,090.82, 27,723.45 and 11,137.57 is: 15,368.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,090.82 : 27,723.45 = 11,137.57 : x
  2. Step 2: Convert to fraction form
    20,090.82/27,723.45 = 11,137.57/x
  3. Step 3: Cross multiply
    20,090.82x = 27,723.45 × 11,137.57
  4. Step 4: Simplify right side
    20,090.82x = 308,771,795.71
  5. Step 5: Solve for x
    x = 308,771,795.71/20,090.82
  6. Step 6: Final answer
    x = 15,368.80

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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.