Home / 12,102.99-18,156.75-4,205.19

Finding the Fourth Proportional to 12,102.99, 18,156.75 and 4,205.19

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Solution

The fourth proportional to 12,102.99, 18,156.75 and 4,205.19 is: 6,308.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,102.99 : 18,156.75 = 4,205.19 : x
  2. Step 2: Convert to fraction form
    12,102.99/18,156.75 = 4,205.19/x
  3. Step 3: Cross multiply
    12,102.99x = 18,156.75 × 4,205.19
  4. Step 4: Simplify right side
    12,102.99x = 76,352,583.53
  5. Step 5: Solve for x
    x = 76,352,583.53/12,102.99
  6. Step 6: Final answer
    x = 6,308.57

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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.