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Finding the Fourth Proportional to 12,617.68, 18,926.52 and 4,828.88

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Solution

The fourth proportional to 12,617.68, 18,926.52 and 4,828.88 is: 7,243.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,617.68 : 18,926.52 = 4,828.88 : x
  2. Step 2: Convert to fraction form
    12,617.68/18,926.52 = 4,828.88/x
  3. Step 3: Cross multiply
    12,617.68x = 18,926.52 × 4,828.88
  4. Step 4: Simplify right side
    12,617.68x = 91,393,893.90
  5. Step 5: Solve for x
    x = 91,393,893.90/12,617.68
  6. Step 6: Final answer
    x = 7,243.32

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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.