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Finding the Fourth Proportional to 13,162.45, 18,164.18 and 7,194.11

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Solution

The fourth proportional to 13,162.45, 18,164.18 and 7,194.11 is: 9,927.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,162.45 : 18,164.18 = 7,194.11 : x
  2. Step 2: Convert to fraction form
    13,162.45/18,164.18 = 7,194.11/x
  3. Step 3: Cross multiply
    13,162.45x = 18,164.18 × 7,194.11
  4. Step 4: Simplify right side
    13,162.45x = 130,675,108.98
  5. Step 5: Solve for x
    x = 130,675,108.98/13,162.45
  6. Step 6: Final answer
    x = 9,927.88

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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.