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Finding the Fourth Proportional to 13,179.80, 18,193.41 and 7,873.63

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Solution

The fourth proportional to 13,179.80, 18,193.41 and 7,873.63 is: 10,868.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,179.80 : 18,193.41 = 7,873.63 : x
  2. Step 2: Convert to fraction form
    13,179.80/18,193.41 = 7,873.63/x
  3. Step 3: Cross multiply
    13,179.80x = 18,193.41 × 7,873.63
  4. Step 4: Simplify right side
    13,179.80x = 143,248,133.29
  5. Step 5: Solve for x
    x = 143,248,133.29/13,179.80
  6. Step 6: Final answer
    x = 10,868.76

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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.