Home / 12,090.46-18,135.78-3,325.85

Finding the Fourth Proportional to 12,090.46, 18,135.78 and 3,325.85

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Solution

The fourth proportional to 12,090.46, 18,135.78 and 3,325.85 is: 4,988.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,090.46 : 18,135.78 = 3,325.85 : x
  2. Step 2: Convert to fraction form
    12,090.46/18,135.78 = 3,325.85/x
  3. Step 3: Cross multiply
    12,090.46x = 18,135.78 × 3,325.85
  4. Step 4: Simplify right side
    12,090.46x = 60,316,883.91
  5. Step 5: Solve for x
    x = 60,316,883.91/12,090.46
  6. Step 6: Final answer
    x = 4,988.80

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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.