Home / 13,184.07-18,213.78-8,657.51

Finding the Fourth Proportional to 13,184.07, 18,213.78 and 8,657.51

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Solution

The fourth proportional to 13,184.07, 18,213.78 and 8,657.51 is: 11,960.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,184.07 : 18,213.78 = 8,657.51 : x
  2. Step 2: Convert to fraction form
    13,184.07/18,213.78 = 8,657.51/x
  3. Step 3: Cross multiply
    13,184.07x = 18,213.78 × 8,657.51
  4. Step 4: Simplify right side
    13,184.07x = 157,685,891.42
  5. Step 5: Solve for x
    x = 157,685,891.42/13,184.07
  6. Step 6: Final answer
    x = 11,960.33

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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.