Home / 20,243.54-27,949.87-13,090.76

Finding the Fourth Proportional to 20,243.54, 27,949.87 and 13,090.76

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Solution

The fourth proportional to 20,243.54, 27,949.87 and 13,090.76 is: 18,074.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,243.54 : 27,949.87 = 13,090.76 : x
  2. Step 2: Convert to fraction form
    20,243.54/27,949.87 = 13,090.76/x
  3. Step 3: Cross multiply
    20,243.54x = 27,949.87 × 13,090.76
  4. Step 4: Simplify right side
    20,243.54x = 365,885,040.20
  5. Step 5: Solve for x
    x = 365,885,040.20/20,243.54
  6. Step 6: Final answer
    x = 18,074.16

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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.