Home / 12,090.24-18,129.87-4,299.24

Finding the Fourth Proportional to 12,090.24, 18,129.87 and 4,299.24

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Solution

The fourth proportional to 12,090.24, 18,129.87 and 4,299.24 is: 6,446.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,090.24 : 18,129.87 = 4,299.24 : x
  2. Step 2: Convert to fraction form
    12,090.24/18,129.87 = 4,299.24/x
  3. Step 3: Cross multiply
    12,090.24x = 18,129.87 × 4,299.24
  4. Step 4: Simplify right side
    12,090.24x = 77,944,662.30
  5. Step 5: Solve for x
    x = 77,944,662.30/12,090.24
  6. Step 6: Final answer
    x = 6,446.91

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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.