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Finding the Fourth Proportional to 14,220.82, 19,622.82 and 7,933.60

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Solution

The fourth proportional to 14,220.82, 19,622.82 and 7,933.60 is: 10,947.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,220.82 : 19,622.82 = 7,933.60 : x
  2. Step 2: Convert to fraction form
    14,220.82/19,622.82 = 7,933.60/x
  3. Step 3: Cross multiply
    14,220.82x = 19,622.82 × 7,933.60
  4. Step 4: Simplify right side
    14,220.82x = 155,679,604.75
  5. Step 5: Solve for x
    x = 155,679,604.75/14,220.82
  6. Step 6: Final answer
    x = 10,947.30

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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.