Home / 13,239.09-18,270-7,270.61

Finding the Fourth Proportional to 13,239.09, 18,270 and 7,270.61

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Solution

The fourth proportional to 13,239.09, 18,270 and 7,270.61 is: 10,033.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,239.09 : 18,270 = 7,270.61 : x
  2. Step 2: Convert to fraction form
    13,239.09/18,270 = 7,270.61/x
  3. Step 3: Cross multiply
    13,239.09x = 18,270 × 7,270.61
  4. Step 4: Simplify right side
    13,239.09x = 132,833,953.35
  5. Step 5: Solve for x
    x = 132,833,953.35/13,239.09
  6. Step 6: Final answer
    x = 10,033.47

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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.