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Finding the Fourth Proportional to 13,892.76, 20,839.14 and 3,504.51

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Solution

The fourth proportional to 13,892.76, 20,839.14 and 3,504.51 is: 5,256.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,892.76 : 20,839.14 = 3,504.51 : x
  2. Step 2: Convert to fraction form
    13,892.76/20,839.14 = 3,504.51/x
  3. Step 3: Cross multiply
    13,892.76x = 20,839.14 × 3,504.51
  4. Step 4: Simplify right side
    13,892.76x = 73,030,974.52
  5. Step 5: Solve for x
    x = 73,030,974.52/13,892.76
  6. Step 6: Final answer
    x = 5,256.77

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.