Home / 12,249.36-16,901.16-7,771.48

Finding the Fourth Proportional to 12,249.36, 16,901.16 and 7,771.48

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Solution

The fourth proportional to 12,249.36, 16,901.16 and 7,771.48 is: 10,722.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,249.36 : 16,901.16 = 7,771.48 : x
  2. Step 2: Convert to fraction form
    12,249.36/16,901.16 = 7,771.48/x
  3. Step 3: Cross multiply
    12,249.36x = 16,901.16 × 7,771.48
  4. Step 4: Simplify right side
    12,249.36x = 131,347,026.92
  5. Step 5: Solve for x
    x = 131,347,026.92/12,249.36
  6. Step 6: Final answer
    x = 10,722.77

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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.