Home / 13,178.45-18,198.41-8,471.00

Finding the Fourth Proportional to 13,178.45, 18,198.41 and 8,471.00

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Solution

The fourth proportional to 13,178.45, 18,198.41 and 8,471.00 is: 11,697.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,178.45 : 18,198.41 = 8,471.00 : x
  2. Step 2: Convert to fraction form
    13,178.45/18,198.41 = 8,471.00/x
  3. Step 3: Cross multiply
    13,178.45x = 18,198.41 × 8,471.00
  4. Step 4: Simplify right side
    13,178.45x = 154,158,597.76
  5. Step 5: Solve for x
    x = 154,158,597.76/13,178.45
  6. Step 6: Final answer
    x = 11,697.78

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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.