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Finding the Fourth Proportional to 12,662.48, 18,996.84 and 4,871.84

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Solution

The fourth proportional to 12,662.48, 18,996.84 and 4,871.84 is: 7,308.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,662.48 : 18,996.84 = 4,871.84 : x
  2. Step 2: Convert to fraction form
    12,662.48/18,996.84 = 4,871.84/x
  3. Step 3: Cross multiply
    12,662.48x = 18,996.84 × 4,871.84
  4. Step 4: Simplify right side
    12,662.48x = 92,549,564.99
  5. Step 5: Solve for x
    x = 92,549,564.99/12,662.48
  6. Step 6: Final answer
    x = 7,308.96

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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.