Home / 12,219.54-18,315.10-5,631.85

Finding the Fourth Proportional to 12,219.54, 18,315.10 and 5,631.85

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Solution

The fourth proportional to 12,219.54, 18,315.10 and 5,631.85 is: 8,441.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,219.54 : 18,315.10 = 5,631.85 : x
  2. Step 2: Convert to fraction form
    12,219.54/18,315.10 = 5,631.85/x
  3. Step 3: Cross multiply
    12,219.54x = 18,315.10 × 5,631.85
  4. Step 4: Simplify right side
    12,219.54x = 103,147,895.94
  5. Step 5: Solve for x
    x = 103,147,895.94/12,219.54
  6. Step 6: Final answer
    x = 8,441.23

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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.