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Finding the Fourth Proportional to 12,800.14, 17,662.62 and 7,133.50

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Solution

The fourth proportional to 12,800.14, 17,662.62 and 7,133.50 is: 9,843.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,800.14 : 17,662.62 = 7,133.50 : x
  2. Step 2: Convert to fraction form
    12,800.14/17,662.62 = 7,133.50/x
  3. Step 3: Cross multiply
    12,800.14x = 17,662.62 × 7,133.50
  4. Step 4: Simplify right side
    12,800.14x = 125,996,299.77
  5. Step 5: Solve for x
    x = 125,996,299.77/12,800.14
  6. Step 6: Final answer
    x = 9,843.35

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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.