Home / 13,078.24-18,045.39-7,335.88

Finding the Fourth Proportional to 13,078.24, 18,045.39 and 7,335.88

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Solution

The fourth proportional to 13,078.24, 18,045.39 and 7,335.88 is: 10,122.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,078.24 : 18,045.39 = 7,335.88 : x
  2. Step 2: Convert to fraction form
    13,078.24/18,045.39 = 7,335.88/x
  3. Step 3: Cross multiply
    13,078.24x = 18,045.39 × 7,335.88
  4. Step 4: Simplify right side
    13,078.24x = 132,378,815.59
  5. Step 5: Solve for x
    x = 132,378,815.59/13,078.24
  6. Step 6: Final answer
    x = 10,122.07

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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.