Home / 18,161.58-25,071.51-12,121.92

Finding the Fourth Proportional to 18,161.58, 25,071.51 and 12,121.92

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Solution

The fourth proportional to 18,161.58, 25,071.51 and 12,121.92 is: 16,733.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,161.58 : 25,071.51 = 12,121.92 : x
  2. Step 2: Convert to fraction form
    18,161.58/25,071.51 = 12,121.92/x
  3. Step 3: Cross multiply
    18,161.58x = 25,071.51 × 12,121.92
  4. Step 4: Simplify right side
    18,161.58x = 303,914,838.50
  5. Step 5: Solve for x
    x = 303,914,838.50/18,161.58
  6. Step 6: Final answer
    x = 16,733.94

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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.