Home / 13,151.97-18,146.75-7,845.75

Finding the Fourth Proportional to 13,151.97, 18,146.75 and 7,845.75

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Solution

The fourth proportional to 13,151.97, 18,146.75 and 7,845.75 is: 10,825.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,151.97 : 18,146.75 = 7,845.75 : x
  2. Step 2: Convert to fraction form
    13,151.97/18,146.75 = 7,845.75/x
  3. Step 3: Cross multiply
    13,151.97x = 18,146.75 × 7,845.75
  4. Step 4: Simplify right side
    13,151.97x = 142,374,824.58
  5. Step 5: Solve for x
    x = 142,374,824.58/13,151.97
  6. Step 6: Final answer
    x = 10,825.36

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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.