Home / 13,181.50-19,819.67-12,154.06

Finding the Fourth Proportional to 13,181.50, 19,819.67 and 12,154.06

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Solution

The fourth proportional to 13,181.50, 19,819.67 and 12,154.06 is: 18,274.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,181.50 : 19,819.67 = 12,154.06 : x
  2. Step 2: Convert to fraction form
    13,181.50/19,819.67 = 12,154.06/x
  3. Step 3: Cross multiply
    13,181.50x = 19,819.67 × 12,154.06
  4. Step 4: Simplify right side
    13,181.50x = 240,889,458.36
  5. Step 5: Solve for x
    x = 240,889,458.36/13,181.50
  6. Step 6: Final answer
    x = 18,274.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.