Home / 13,396.26-18,479.12-8,358.06

Finding the Fourth Proportional to 13,396.26, 18,479.12 and 8,358.06

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Solution

The fourth proportional to 13,396.26, 18,479.12 and 8,358.06 is: 11,529.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,396.26 : 18,479.12 = 8,358.06 : x
  2. Step 2: Convert to fraction form
    13,396.26/18,479.12 = 8,358.06/x
  3. Step 3: Cross multiply
    13,396.26x = 18,479.12 × 8,358.06
  4. Step 4: Simplify right side
    13,396.26x = 154,449,593.71
  5. Step 5: Solve for x
    x = 154,449,593.71/13,396.26
  6. Step 6: Final answer
    x = 11,529.31

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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.