Home / 12,119.84-18,154.23-5,551.55

Finding the Fourth Proportional to 12,119.84, 18,154.23 and 5,551.55

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Solution

The fourth proportional to 12,119.84, 18,154.23 and 5,551.55 is: 8,315.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,119.84 : 18,154.23 = 5,551.55 : x
  2. Step 2: Convert to fraction form
    12,119.84/18,154.23 = 5,551.55/x
  3. Step 3: Cross multiply
    12,119.84x = 18,154.23 × 5,551.55
  4. Step 4: Simplify right side
    12,119.84x = 100,784,115.56
  5. Step 5: Solve for x
    x = 100,784,115.56/12,119.84
  6. Step 6: Final answer
    x = 8,315.63

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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.