Home / 11,945-16,484.82-6,639.92

Finding the Fourth Proportional to 11,945, 16,484.82 and 6,639.92

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Solution

The fourth proportional to 11,945, 16,484.82 and 6,639.92 is: 9,163.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,945 : 16,484.82 = 6,639.92 : x
  2. Step 2: Convert to fraction form
    11,945/16,484.82 = 6,639.92/x
  3. Step 3: Cross multiply
    11,945x = 16,484.82 × 6,639.92
  4. Step 4: Simplify right side
    11,945x = 109,457,886.01
  5. Step 5: Solve for x
    x = 109,457,886.01/11,945
  6. Step 6: Final answer
    x = 9,163.49

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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.