Home / 13,120.58-18,103.29-7,455.44

Finding the Fourth Proportional to 13,120.58, 18,103.29 and 7,455.44

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Solution

The fourth proportional to 13,120.58, 18,103.29 and 7,455.44 is: 10,286.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,120.58 : 18,103.29 = 7,455.44 : x
  2. Step 2: Convert to fraction form
    13,120.58/18,103.29 = 7,455.44/x
  3. Step 3: Cross multiply
    13,120.58x = 18,103.29 × 7,455.44
  4. Step 4: Simplify right side
    13,120.58x = 134,967,992.40
  5. Step 5: Solve for x
    x = 134,967,992.40/13,120.58
  6. Step 6: Final answer
    x = 10,286.74

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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.