Home / 13,162.06-18,163.65-7,112.30

Finding the Fourth Proportional to 13,162.06, 18,163.65 and 7,112.30

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Solution

The fourth proportional to 13,162.06, 18,163.65 and 7,112.30 is: 9,814.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,162.06 : 18,163.65 = 7,112.30 : x
  2. Step 2: Convert to fraction form
    13,162.06/18,163.65 = 7,112.30/x
  3. Step 3: Cross multiply
    13,162.06x = 18,163.65 × 7,112.30
  4. Step 4: Simplify right side
    13,162.06x = 129,185,327.90
  5. Step 5: Solve for x
    x = 129,185,327.90/13,162.06
  6. Step 6: Final answer
    x = 9,814.98

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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.