Home / 18,403.31-27,604.40-5,255.70

Finding the Fourth Proportional to 18,403.31, 27,604.40 and 5,255.70

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Solution

The fourth proportional to 18,403.31, 27,604.40 and 5,255.70 is: 7,883.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,403.31 : 27,604.40 = 5,255.70 : x
  2. Step 2: Convert to fraction form
    18,403.31/27,604.40 = 5,255.70/x
  3. Step 3: Cross multiply
    18,403.31x = 27,604.40 × 5,255.70
  4. Step 4: Simplify right side
    18,403.31x = 145,080,418.80
  5. Step 5: Solve for x
    x = 145,080,418.80/18,403.31
  6. Step 6: Final answer
    x = 7,883.39

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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.