Home / 20,230.72-27,918.39-11,278.03

Finding the Fourth Proportional to 20,230.72, 27,918.39 and 11,278.03

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Solution

The fourth proportional to 20,230.72, 27,918.39 and 11,278.03 is: 15,563.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,230.72 : 27,918.39 = 11,278.03 : x
  2. Step 2: Convert to fraction form
    20,230.72/27,918.39 = 11,278.03/x
  3. Step 3: Cross multiply
    20,230.72x = 27,918.39 × 11,278.03
  4. Step 4: Simplify right side
    20,230.72x = 314,864,370.18
  5. Step 5: Solve for x
    x = 314,864,370.18/20,230.72
  6. Step 6: Final answer
    x = 15,563.68

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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.