Home / 13,388.12-18,475.60-7,338.60

Finding the Fourth Proportional to 13,388.12, 18,475.60 and 7,338.60

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Solution

The fourth proportional to 13,388.12, 18,475.60 and 7,338.60 is: 10,127.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,388.12 : 18,475.60 = 7,338.60 : x
  2. Step 2: Convert to fraction form
    13,388.12/18,475.60 = 7,338.60/x
  3. Step 3: Cross multiply
    13,388.12x = 18,475.60 × 7,338.60
  4. Step 4: Simplify right side
    13,388.12x = 135,584,945.78
  5. Step 5: Solve for x
    x = 135,584,945.78/13,388.12
  6. Step 6: Final answer
    x = 10,127.26

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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.