Home / 13,249.78-18,280.70-7,942.66

Finding the Fourth Proportional to 13,249.78, 18,280.70 and 7,942.66

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Solution

The fourth proportional to 13,249.78, 18,280.70 and 7,942.66 is: 10,958.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,249.78 : 18,280.70 = 7,942.66 : x
  2. Step 2: Convert to fraction form
    13,249.78/18,280.70 = 7,942.66/x
  3. Step 3: Cross multiply
    13,249.78x = 18,280.70 × 7,942.66
  4. Step 4: Simplify right side
    13,249.78x = 145,197,384.66
  5. Step 5: Solve for x
    x = 145,197,384.66/13,249.78
  6. Step 6: Final answer
    x = 10,958.48

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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.