Home / 12,299.88-18,435.78-5,277.72

Finding the Fourth Proportional to 12,299.88, 18,435.78 and 5,277.72

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Solution

The fourth proportional to 12,299.88, 18,435.78 and 5,277.72 is: 7,910.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,299.88 : 18,435.78 = 5,277.72 : x
  2. Step 2: Convert to fraction form
    12,299.88/18,435.78 = 5,277.72/x
  3. Step 3: Cross multiply
    12,299.88x = 18,435.78 × 5,277.72
  4. Step 4: Simplify right side
    12,299.88x = 97,298,884.82
  5. Step 5: Solve for x
    x = 97,298,884.82/12,299.88
  6. Step 6: Final answer
    x = 7,910.56

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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.