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Finding the Fourth Proportional to 13,818.80, 19,073.02 and 8,782.04

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Solution

The fourth proportional to 13,818.80, 19,073.02 and 8,782.04 is: 12,121.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,818.80 : 19,073.02 = 8,782.04 : x
  2. Step 2: Convert to fraction form
    13,818.80/19,073.02 = 8,782.04/x
  3. Step 3: Cross multiply
    13,818.80x = 19,073.02 × 8,782.04
  4. Step 4: Simplify right side
    13,818.80x = 167,499,907.24
  5. Step 5: Solve for x
    x = 167,499,907.24/13,818.80
  6. Step 6: Final answer
    x = 12,121.17

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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.