Home / 13,239.09-18,268.88-7,270.61

Finding the Fourth Proportional to 13,239.09, 18,268.88 and 7,270.61

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Solution

The fourth proportional to 13,239.09, 18,268.88 and 7,270.61 is: 10,032.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,239.09 : 18,268.88 = 7,270.61 : x
  2. Step 2: Convert to fraction form
    13,239.09/18,268.88 = 7,270.61/x
  3. Step 3: Cross multiply
    13,239.09x = 18,268.88 × 7,270.61
  4. Step 4: Simplify right side
    13,239.09x = 132,825,773.92
  5. Step 5: Solve for x
    x = 132,825,773.92/13,239.09
  6. Step 6: Final answer
    x = 10,032.85

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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.