Home / 12,114.76-18,172.14-4,321.75

Finding the Fourth Proportional to 12,114.76, 18,172.14 and 4,321.75

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Solution

The fourth proportional to 12,114.76, 18,172.14 and 4,321.75 is: 6,482.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,114.76 : 18,172.14 = 4,321.75 : x
  2. Step 2: Convert to fraction form
    12,114.76/18,172.14 = 4,321.75/x
  3. Step 3: Cross multiply
    12,114.76x = 18,172.14 × 4,321.75
  4. Step 4: Simplify right side
    12,114.76x = 78,535,446.05
  5. Step 5: Solve for x
    x = 78,535,446.05/12,114.76
  6. Step 6: Final answer
    x = 6,482.63

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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.