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Finding the Fourth Proportional to 13,097.68, 18,068.04 and 8,121.04

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Solution

The fourth proportional to 13,097.68, 18,068.04 and 8,121.04 is: 11,202.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,097.68 : 18,068.04 = 8,121.04 : x
  2. Step 2: Convert to fraction form
    13,097.68/18,068.04 = 8,121.04/x
  3. Step 3: Cross multiply
    13,097.68x = 18,068.04 × 8,121.04
  4. Step 4: Simplify right side
    13,097.68x = 146,731,275.56
  5. Step 5: Solve for x
    x = 146,731,275.56/13,097.68
  6. Step 6: Final answer
    x = 11,202.84

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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.