Home / 13,388.44-18,475.64-7,338.55

Finding the Fourth Proportional to 13,388.44, 18,475.64 and 7,338.55

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Solution

The fourth proportional to 13,388.44, 18,475.64 and 7,338.55 is: 10,126.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,388.44 : 18,475.64 = 7,338.55 : x
  2. Step 2: Convert to fraction form
    13,388.44/18,475.64 = 7,338.55/x
  3. Step 3: Cross multiply
    13,388.44x = 18,475.64 × 7,338.55
  4. Step 4: Simplify right side
    13,388.44x = 135,584,290.40
  5. Step 5: Solve for x
    x = 135,584,290.40/13,388.44
  6. Step 6: Final answer
    x = 10,126.97

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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.