Home / 13,179.87-18,169.30-9,396.47

Finding the Fourth Proportional to 13,179.87, 18,169.30 and 9,396.47

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Solution

The fourth proportional to 13,179.87, 18,169.30 and 9,396.47 is: 12,953.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,179.87 : 18,169.30 = 9,396.47 : x
  2. Step 2: Convert to fraction form
    13,179.87/18,169.30 = 9,396.47/x
  3. Step 3: Cross multiply
    13,179.87x = 18,169.30 × 9,396.47
  4. Step 4: Simplify right side
    13,179.87x = 170,727,339.54
  5. Step 5: Solve for x
    x = 170,727,339.54/13,179.87
  6. Step 6: Final answer
    x = 12,953.64

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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.