Home / 13,076.90-18,046.33-7,108.59

Finding the Fourth Proportional to 13,076.90, 18,046.33 and 7,108.59

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Solution

The fourth proportional to 13,076.90, 18,046.33 and 7,108.59 is: 9,809.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,076.90 : 18,046.33 = 7,108.59 : x
  2. Step 2: Convert to fraction form
    13,076.90/18,046.33 = 7,108.59/x
  3. Step 3: Cross multiply
    13,076.90x = 18,046.33 × 7,108.59
  4. Step 4: Simplify right side
    13,076.90x = 128,283,960.97
  5. Step 5: Solve for x
    x = 128,283,960.97/13,076.90
  6. Step 6: Final answer
    x = 9,809.97

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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.