Home / 20,082.63-27,679.41-13,356.22

Finding the Fourth Proportional to 20,082.63, 27,679.41 and 13,356.22

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Solution

The fourth proportional to 20,082.63, 27,679.41 and 13,356.22 is: 18,408.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,082.63 : 27,679.41 = 13,356.22 : x
  2. Step 2: Convert to fraction form
    20,082.63/27,679.41 = 13,356.22/x
  3. Step 3: Cross multiply
    20,082.63x = 27,679.41 × 13,356.22
  4. Step 4: Simplify right side
    20,082.63x = 369,692,289.43
  5. Step 5: Solve for x
    x = 369,692,289.43/20,082.63
  6. Step 6: Final answer
    x = 18,408.56

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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.