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Finding the Fourth Proportional to 13,662.74, 20,494.84 and 4,303.49

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Solution

The fourth proportional to 13,662.74, 20,494.84 and 4,303.49 is: 6,455.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,662.74 : 20,494.84 = 4,303.49 : x
  2. Step 2: Convert to fraction form
    13,662.74/20,494.84 = 4,303.49/x
  3. Step 3: Cross multiply
    13,662.74x = 20,494.84 × 4,303.49
  4. Step 4: Simplify right side
    13,662.74x = 88,199,338.99
  5. Step 5: Solve for x
    x = 88,199,338.99/13,662.74
  6. Step 6: Final answer
    x = 6,455.46

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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.