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Finding the Fourth Proportional to 10,639.80, 15,965.64 and 6,202.62

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Solution

The fourth proportional to 10,639.80, 15,965.64 and 6,202.62 is: 9,307.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,639.80 : 15,965.64 = 6,202.62 : x
  2. Step 2: Convert to fraction form
    10,639.80/15,965.64 = 6,202.62/x
  3. Step 3: Cross multiply
    10,639.80x = 15,965.64 × 6,202.62
  4. Step 4: Simplify right side
    10,639.80x = 99,028,797.98
  5. Step 5: Solve for x
    x = 99,028,797.98/10,639.80
  6. Step 6: Final answer
    x = 9,307.39

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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.