Home / 13,388.26-18,475.57-7,338.45

Finding the Fourth Proportional to 13,388.26, 18,475.57 and 7,338.45

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Solution

The fourth proportional to 13,388.26, 18,475.57 and 7,338.45 is: 10,126.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,388.26 : 18,475.57 = 7,338.45 : x
  2. Step 2: Convert to fraction form
    13,388.26/18,475.57 = 7,338.45/x
  3. Step 3: Cross multiply
    13,388.26x = 18,475.57 × 7,338.45
  4. Step 4: Simplify right side
    13,388.26x = 135,582,046.67
  5. Step 5: Solve for x
    x = 135,582,046.67/13,388.26
  6. Step 6: Final answer
    x = 10,126.94

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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.