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Finding the Fourth Proportional to 42,799.50, 64,198.04 and 13,213.04

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Solution

The fourth proportional to 42,799.50, 64,198.04 and 13,213.04 is: 19,819.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,799.50 : 64,198.04 = 13,213.04 : x
  2. Step 2: Convert to fraction form
    42,799.50/64,198.04 = 13,213.04/x
  3. Step 3: Cross multiply
    42,799.50x = 64,198.04 × 13,213.04
  4. Step 4: Simplify right side
    42,799.50x = 848,250,883.39
  5. Step 5: Solve for x
    x = 848,250,883.39/42,799.50
  6. Step 6: Final answer
    x = 19,819.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.