Home / 13,236.31-18,266.15-7,186.56

Finding the Fourth Proportional to 13,236.31, 18,266.15 and 7,186.56

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Solution

The fourth proportional to 13,236.31, 18,266.15 and 7,186.56 is: 9,917.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,236.31 : 18,266.15 = 7,186.56 : x
  2. Step 2: Convert to fraction form
    13,236.31/18,266.15 = 7,186.56/x
  3. Step 3: Cross multiply
    13,236.31x = 18,266.15 × 7,186.56
  4. Step 4: Simplify right side
    13,236.31x = 131,270,732.41
  5. Step 5: Solve for x
    x = 131,270,732.41/13,236.31
  6. Step 6: Final answer
    x = 9,917.48

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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.