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Finding the Fourth Proportional to 8,818.49, 13,179.99 and 8,117.97

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Solution

The fourth proportional to 8,818.49, 13,179.99 and 8,117.97 is: 12,133.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,818.49 : 13,179.99 = 8,117.97 : x
  2. Step 2: Convert to fraction form
    8,818.49/13,179.99 = 8,117.97/x
  3. Step 3: Cross multiply
    8,818.49x = 13,179.99 × 8,117.97
  4. Step 4: Simplify right side
    8,818.49x = 106,994,763.42
  5. Step 5: Solve for x
    x = 106,994,763.42/8,818.49
  6. Step 6: Final answer
    x = 12,133.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.