Home / 12,324.38-18,486.59-3,090.38

Finding the Fourth Proportional to 12,324.38, 18,486.59 and 3,090.38

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Solution

The fourth proportional to 12,324.38, 18,486.59 and 3,090.38 is: 4,635.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,324.38 : 18,486.59 = 3,090.38 : x
  2. Step 2: Convert to fraction form
    12,324.38/18,486.59 = 3,090.38/x
  3. Step 3: Cross multiply
    12,324.38x = 18,486.59 × 3,090.38
  4. Step 4: Simplify right side
    12,324.38x = 57,130,480.12
  5. Step 5: Solve for x
    x = 57,130,480.12/12,324.38
  6. Step 6: Final answer
    x = 4,635.57

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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.