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Finding the Fourth Proportional to 13,338.56, 20,007.80 and 3,477.80

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Solution

The fourth proportional to 13,338.56, 20,007.80 and 3,477.80 is: 5,216.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,338.56 : 20,007.80 = 3,477.80 : x
  2. Step 2: Convert to fraction form
    13,338.56/20,007.80 = 3,477.80/x
  3. Step 3: Cross multiply
    13,338.56x = 20,007.80 × 3,477.80
  4. Step 4: Simplify right side
    13,338.56x = 69,583,126.84
  5. Step 5: Solve for x
    x = 69,583,126.84/13,338.56
  6. Step 6: Final answer
    x = 5,216.69

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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.