Home / 12,276.78-16,944.14-7,240.68

Finding the Fourth Proportional to 12,276.78, 16,944.14 and 7,240.68

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Solution

The fourth proportional to 12,276.78, 16,944.14 and 7,240.68 is: 9,993.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,276.78 : 16,944.14 = 7,240.68 : x
  2. Step 2: Convert to fraction form
    12,276.78/16,944.14 = 7,240.68/x
  3. Step 3: Cross multiply
    12,276.78x = 16,944.14 × 7,240.68
  4. Step 4: Simplify right side
    12,276.78x = 122,687,095.62
  5. Step 5: Solve for x
    x = 122,687,095.62/12,276.78
  6. Step 6: Final answer
    x = 9,993.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.