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Finding the Fourth Proportional to 12,046.78, 18,070.12 and 3,281.68

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Solution

The fourth proportional to 12,046.78, 18,070.12 and 3,281.68 is: 4,922.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,046.78 : 18,070.12 = 3,281.68 : x
  2. Step 2: Convert to fraction form
    12,046.78/18,070.12 = 3,281.68/x
  3. Step 3: Cross multiply
    12,046.78x = 18,070.12 × 3,281.68
  4. Step 4: Simplify right side
    12,046.78x = 59,300,351.40
  5. Step 5: Solve for x
    x = 59,300,351.40/12,046.78
  6. Step 6: Final answer
    x = 4,922.51

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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.