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Finding the Fourth Proportional to 12,662.87, 18,996.53 and 4,871.07

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Solution

The fourth proportional to 12,662.87, 18,996.53 and 4,871.07 is: 7,307.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,662.87 : 18,996.53 = 4,871.07 : x
  2. Step 2: Convert to fraction form
    12,662.87/18,996.53 = 4,871.07/x
  3. Step 3: Cross multiply
    12,662.87x = 18,996.53 × 4,871.07
  4. Step 4: Simplify right side
    12,662.87x = 92,533,403.03
  5. Step 5: Solve for x
    x = 92,533,403.03/12,662.87
  6. Step 6: Final answer
    x = 7,307.46

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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.