Home / 13,207.95-18,227.30-7,239.60

Finding the Fourth Proportional to 13,207.95, 18,227.30 and 7,239.60

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Solution

The fourth proportional to 13,207.95, 18,227.30 and 7,239.60 is: 9,990.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,207.95 : 18,227.30 = 7,239.60 : x
  2. Step 2: Convert to fraction form
    13,207.95/18,227.30 = 7,239.60/x
  3. Step 3: Cross multiply
    13,207.95x = 18,227.30 × 7,239.60
  4. Step 4: Simplify right side
    13,207.95x = 131,958,324.88
  5. Step 5: Solve for x
    x = 131,958,324.88/13,207.95
  6. Step 6: Final answer
    x = 9,990.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.