Home / 13,208.30-18,227.07-7,239.86

Finding the Fourth Proportional to 13,208.30, 18,227.07 and 7,239.86

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Solution

The fourth proportional to 13,208.30, 18,227.07 and 7,239.86 is: 9,990.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,208.30 : 18,227.07 = 7,239.86 : x
  2. Step 2: Convert to fraction form
    13,208.30/18,227.07 = 7,239.86/x
  3. Step 3: Cross multiply
    13,208.30x = 18,227.07 × 7,239.86
  4. Step 4: Simplify right side
    13,208.30x = 131,961,435.01
  5. Step 5: Solve for x
    x = 131,961,435.01/13,208.30
  6. Step 6: Final answer
    x = 9,990.80

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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.