Home / 12,126.05-18,188.99-3,120.14

Finding the Fourth Proportional to 12,126.05, 18,188.99 and 3,120.14

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Solution

The fourth proportional to 12,126.05, 18,188.99 and 3,120.14 is: 4,680.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,126.05 : 18,188.99 = 3,120.14 : x
  2. Step 2: Convert to fraction form
    12,126.05/18,188.99 = 3,120.14/x
  3. Step 3: Cross multiply
    12,126.05x = 18,188.99 × 3,120.14
  4. Step 4: Simplify right side
    12,126.05x = 56,752,225.13
  5. Step 5: Solve for x
    x = 56,752,225.13/12,126.05
  6. Step 6: Final answer
    x = 4,680.19

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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.