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Finding the Fourth Proportional to 12,647.56, 18,973.56 and 4,325.62

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Solution

The fourth proportional to 12,647.56, 18,973.56 and 4,325.62 is: 6,489.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,647.56 : 18,973.56 = 4,325.62 : x
  2. Step 2: Convert to fraction form
    12,647.56/18,973.56 = 4,325.62/x
  3. Step 3: Cross multiply
    12,647.56x = 18,973.56 × 4,325.62
  4. Step 4: Simplify right side
    12,647.56x = 82,072,410.61
  5. Step 5: Solve for x
    x = 82,072,410.61/12,647.56
  6. Step 6: Final answer
    x = 6,489.19

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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.