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Finding the Fourth Proportional to 13,606.88, 20,410.74 and 3,746.88

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Solution

The fourth proportional to 13,606.88, 20,410.74 and 3,746.88 is: 5,620.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,606.88 : 20,410.74 = 3,746.88 : x
  2. Step 2: Convert to fraction form
    13,606.88/20,410.74 = 3,746.88/x
  3. Step 3: Cross multiply
    13,606.88x = 20,410.74 × 3,746.88
  4. Step 4: Simplify right side
    13,606.88x = 76,476,593.49
  5. Step 5: Solve for x
    x = 76,476,593.49/13,606.88
  6. Step 6: Final answer
    x = 5,620.44

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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.