Home / 12,090.88-18,132.66-4,299.28

Finding the Fourth Proportional to 12,090.88, 18,132.66 and 4,299.28

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Solution

The fourth proportional to 12,090.88, 18,132.66 and 4,299.28 is: 6,447.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,090.88 : 18,132.66 = 4,299.28 : x
  2. Step 2: Convert to fraction form
    12,090.88/18,132.66 = 4,299.28/x
  3. Step 3: Cross multiply
    12,090.88x = 18,132.66 × 4,299.28
  4. Step 4: Simplify right side
    12,090.88x = 77,957,382.48
  5. Step 5: Solve for x
    x = 77,957,382.48/12,090.88
  6. Step 6: Final answer
    x = 6,447.62

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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.