Home / 12,511.46-18,750.79-5,107.44

Finding the Fourth Proportional to 12,511.46, 18,750.79 and 5,107.44

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Solution

The fourth proportional to 12,511.46, 18,750.79 and 5,107.44 is: 7,654.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,511.46 : 18,750.79 = 5,107.44 : x
  2. Step 2: Convert to fraction form
    12,511.46/18,750.79 = 5,107.44/x
  3. Step 3: Cross multiply
    12,511.46x = 18,750.79 × 5,107.44
  4. Step 4: Simplify right side
    12,511.46x = 95,768,585.21
  5. Step 5: Solve for x
    x = 95,768,585.21/12,511.46
  6. Step 6: Final answer
    x = 7,654.47

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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.